Marine Biology News
12th December, 2025
| Jim Crocker
Do moon jellyfish prefer to be alone? New research explores social behavior.
New research challenges the idea jellyfish gather for safety. Moon jellyfish actually avoided others in new tanks, suggesting aggregation isn’t driven by social attraction. They may maintain family groups despite wide dispersal, & show complex behavior beyond simple reflexes.
6th December, 2025
| Greg Howard
How skipjack tuna use ocean temperatures to find spawning and wintering grounds
Skipjack tuna migrate south, but not always to spawn. New research reveals two groups: one actively reproducing in warm waters, the other avoiding cold & feeding in the north.
5th December, 2025
| Jim Crocker
Decoding dolphin sounds to understand their behavior
Dolphin sounds reveal a lot about their lives. A new study of bottlenose dolphins found they vocalize more during training, feeding, and especially play. Analyzing these whistles & clicks helps understand their needs & boosts conservation efforts.
22nd November, 2025
| Jim Crocker
Frozen sperm helps revive endangered fish species
Scientists revived the genetic lineage of an endangered fish by freezing & transplanting early reproductive cells into a related species.
20th November, 2025
| Jim Crocker
How deep-sea corals cope with ocean warming and acidification
Deep-sea corals face climate change impacts like warming & acidification. A new study found one coral species, D. cornigera, surprisingly resilient to these stressors, challenging some habitat loss predictions. Long-term effects & reproductive success still need investigation.
17th November, 2025
| Greg Howard
Deep-sea corals thrive alongside bacteria that convert sulfur into energy
Deep-sea corals thrive in harsh environments via surprising partnerships. Scientists found corals near chemical-rich seafloor vents host bacteria that create food from chemicals, not sunlight.
16th November, 2025
| Jenn Hoskins
How viruses in the ocean change over time
Ocean viruses, mostly those infecting bacteria, are key to healthy marine ecosystems. A new study of Korean coastal waters revealed surprising viral diversity using advanced genetic analysis.
8th November, 2025
| Jenn Hoskins
Detailed genetic map created for the Spottedtail morwong
Scientists created a detailed genetic blueprint for the spottedtail morwong, a valuable food fish. This unlocks potential for breeding better aquaculture strains & clarifies its evolutionary relationships with other species.
9th November, 2025
| Greg Howard
Extra oxygen doesn't protect freshwater creatures from warming waters
Ocean warming threatens aquatic life, but extra oxygen doesn’t broadly help. A new study of 14 species found increased oxygen offered little to no heat protection, contrary to some prior research. Current climate models may not need major oxygen adjustments.
7th November, 2025
| Greg Howard
How hot can they handle? Deep-sea creatures and changing ocean temperatures
Deep-sea vent crustaceans tolerate high heat briefly, but oxygen levels are a bigger survival challenge. Those from hotter vents are more heat-resistant. Long-term exposure limits survival, similar to the Pompeii worm, showing duration matters.
7th November, 2025
| Jim Crocker
Rising sea levels threaten Florida horseshoe crab breeding grounds
Rising sea levels threaten coastal habitats crucial for wildlife like horseshoe crabs. A Florida study predicts significant loss of mangroves & tidal flats by 2100, impacting crab breeding grounds.
20th October, 2025
| Greg Howard
Where and when whale sharks strand, and what ocean conditions may be to blame
Whale shark strandings are rising in Indonesia, particularly among young sharks. Research links these events to upwelling zones where they feed, but pollution & exploitation likely worsen the problem. Proactive conservation is vital to protect this endangered species.
10th October, 2025
| Jenn Hoskins
Octopus use smell to locate prey
Octopuses can follow scent trails to find food, even in darkness, researchers discovered. They don’t swim straight, but zig-zag, pausing to detect the plume’s source. Arms, not just noses, seem key to sensing chemicals, supporting complex navigation despite limited smell organs.
8th October, 2025
| Jenn Hoskins
How heat preparation affects coral health: a detailed biomarker study
Coral reefs face crisis from warming oceans causing bleaching. New research shows ‘training’ corals with mild heat boosts their resilience by improving cell protection & algae health. Different coral types respond uniquely, needing tailored restoration.
30th September, 2025
| Greg Howard
Lanthanum exposure alters chemical processes in Manila clams
Rare earth elements like lanthanum (La) are vital for tech but increasing pollution impacts marine life. New research on Manila clams shows La exposure damages gills and disrupts key cell functions like energy production and protection against cell damage.
28th September, 2025
| Jim Crocker
How marine parasites and coral larvae navigate using chemical cues
Researchers modeled how a parasitic isopod and coral larvae find hosts/settlement sites using chemical signals. A new mathematical approach, inspired by simple 'vehicles', matched observed animal movements, revealing how intermittent searching aids detection.
26th September, 2025
| Jim Crocker
New Deep Learning System Automatically Spots Sea Snot Using Satellite Data
‘Sea snot’ blooms threaten marine life, tourism, and fisheries. Researchers used satellite images and AI to rapidly detect these organic accumulations in the Marmara Sea with up to 100% accuracy.
23rd September, 2025
| Jenn Hoskins
How Repeated Blood Draws Affect Relaxed Oyster Muscles
Researchers tested if repeatedly taking small blood samples from oysters harms them. Some oysters died, especially after many samples, but rates were low (10-22%).
15th September, 2025
| Greg Howard
Improving Coral Spawn Collection: How Technique and Timing Affect Larval Quality
Coral reefs need help recovering. New research shows quick spawn collection – within an hour of fertilization – is key for successful restoration. Collection method matters less than speed, minimizing embryo damage & maximizing healthy larval settlement.
13th September, 2025
| Greg Howard
Ocean Conditions Affect Young Albacore Tuna Energy Levels
juvenile albacore tuna rely on the California Current for summer feeding. research shows sea surface temperature is key to their energy levels, with warmer waters linked to lower body condition.
11th September, 2025
| Greg Howard
Genetic Links in Skeleton Formation of Sponges and Stony Corals
sponges build hard skeletons using a process similar to corals, despite evolving separately. research on sycon ciliatum identified genes active during skeleton formation, revealing shared proteins—a “toolkit”—controlling crystal growth.
9th September, 2025
| Jim Crocker
How Identical Sea Urchin Twins Develop and What Controls It
Sea urchin embryos show surprising self-repair abilities. Separated cells can rebuild a complete organism, correcting disrupted head-to-tail orientation using existing developmental tools like the Wnt pathway.
5th September, 2025
| Greg Howard
How Well Do Marine Protected Areas Help Fish Populations?
Mediterranean no-take zones boost fish recovery, a new study shows. Protected areas near Cap Corse saw 3-4x more dusky grouper & brown meagre, with 6x the biomass. Common dentex grew larger within the zone, despite similar numbers. Warming seas still pose a threat.
5th September, 2025
| Greg Howard
Ecosystem Health Index Could Improve Marine Resource Management
New research offers a better way to assess ecosystem health, moving beyond simple species counts to focus on vital connections within food webs. The Ecosystem Traits Index (ETI) identifies critical species, measures resilience to change, and tracks human impact like fishing.
4th September, 2025
| Jenn Hoskins
How Plastic and Seaweed Shelters Affect Skin Bacteria in Cleaner Fish
Atlantic salmon farms use lumpfish to eat parasites, but these cleaners often struggle. New research shows seaweed shelters improve lumpfish skin bacteria, reducing harmful microbes compared to plastic ones.
3rd September, 2025
| Jim Crocker
Seas of Renewal: Sea Urchin Waste for Healing Materials
Researchers created improved wound healing materials from sea urchin waste, combining skin protein scaffolds with antioxidant compounds. These composites were stronger, lasted longer, and remained non toxic to skin cells, offering a sustainable approach to tissue regeneration.
2nd September, 2025
| Jenn Hoskins
Shortfin Mako Shark Survival After Capture in Atlantic Fisheries
Shortfin mako shark numbers are declining due to overfishing, despite bans on landing them. New research shows 59-64% survive being caught and released, varying by location and fishing practices. Longer fishing times, warmer water, and larger sharks reduce survival.
23rd August, 2025
| Greg Howard
How Ocean Nutrients Affect Island Reptiles That Eat Insects and Plants
Marine nutrients significantly support lizards on arid islands in the Gulf of California, especially where terrestrial food is scarce. Researchers found greater reliance on these resources—delivered via seabird waste—in drier, northern islands.
22nd August, 2025
| Jim Crocker
How Coral Reefs Grow: Changes in Young, Growing, and Mature Corals Over Time
Coral reef health depends on a balance of young & adult corals. Study in Madagascar showed some coral types thrive when adults are plentiful (stock-recruitment), while others are limited by how many new corals survive (recruitment-limitation).
21st August, 2025
| Jim Crocker
Unlocking Gene Secrets: How Two Life Forms Evolved
New genetic research on two look-alike hermit crab species, Pagurus lanuginosus and Pagurus maculosus, reveals they diverged 6.24 million years ago. Differences in leg gene activity, especially for exoskeleton material, explain their distinct features.
15th August, 2025
| Jim Crocker
How Shore Crabs Handle Ship Noise
Ocean noise from shipping is a major pollutant, harming marine life. A new study on shore crabs shows this constant din makes them more reactive to predators. Crucially, crabs don't adapt, meaning human-made noise is a persistent threat to crucial ocean creatures.
13th August, 2025
| Greg Howard
A Host's Sea Floor Germs and Unique Gut Bacteria
New research on Upside-Down Jellyfish reveals they tightly control their internal bacteria, hosting only a few specific types crucial for health. Their outer surfaces, however, carry diverse bacteria similar to the environment. This shows jellyfish actively partner with microbes.
8th August, 2025
| Greg Howard
Better Management of Water Environments Using AI Images
AI models now help fisheries securely analyze vast underwater images in-house. Trained on thousands of seafloor pictures, they accurately identify habitats like sand, seaweed, and seagrass, enabling smarter marine management.
1st August, 2025
| Jenn Hoskins
Microbe Fats Boost Growth and Immunity for Aquaculture
New research shows oils from tiny organisms can replace fish oil in shrimp feed. These sustainable oils boost shrimp growth and immunity, helping fight diseases like WSSV and reducing reliance on wild fish.
31st July, 2025
| Greg Howard
Tracking Color Movement In Cephalopods With A Computer System
Cuttlefish and octopuses are camouflage experts, instantly changing skin patterns. A new tool, CHROMAS, now lets scientists precisely track how their brain controls individual color-changing cells in their skin, revealing the secrets of their incredible disguise.
31st July, 2025
| Jenn Hoskins
How Diatoms And Golden Algae Communicate
Microscopic ocean life uses a complex chemical language to interact and influence ecosystems. New research reveals how tiny algae communicate and adapt through these signals, even without touching. Deciphering this hidden dialogue is key to understanding marine health.
18th July, 2025
| Jenn Hoskins
Mussel Shell Coating Protects Against Damage
Ocean acidification threatens shell-building marine life. A study reveals mussels have a natural protective layer on their shells, like a varnish, that significantly reduces breakdown in acidic water. Losing this layer makes them vulnerable.
15th July, 2025
| Jenn Hoskins
Five-Year Study Shows Sudden Fungi Bursts In Coastal Water
Ocean fungi are vital but mysterious! New research shows their numbers in the sea fluctuate chaotically with unpredictable blooms of specific types, not seasonal patterns. This high-frequency study reveals a dynamic picture, crucial for understanding ocean life.
10th July, 2025
| Jenn Hoskins
Caprera Canyon: A Hotspot Of Oceanic Biodiversity In The Mediterranean Sea
A study confirms Italy's Caprera Canyon is a vital hotspot for whales and dolphins, hosting 8 species and serving as a key breeding and feeding ground. This research fills crucial data gaps, urging protection for these marine mammals in the threatened Mediterranean Sea.
10th July, 2025
| Jenn Hoskins
Early Life's Varied Feeding Methods
Fish hunt in surprisingly diverse ways! A study found young cichlids and zebrafish share a two-eyed, direct strike method. But medaka track prey with one eye, striking sideways. This reveals how evolution shaped vastly different hunting strategies.
28th June, 2025
| Jenn Hoskins
Comparing Drones and Ground Tools for Shoreline Ocean Tracking
Monitoring elusive harbor porpoises is challenging. A study found that land-based optical tools excel at tracking them, while drones are superior for counting group sizes. Using both together provides a comprehensive, vital view for protecting these marine mammals.
21st June, 2025
| Jenn Hoskins
AI Uncovers Ocean Reef Ancestry From Physical Shapes
Saving coral reefs starts with knowing their species, but corals often fool us by changing looks or hiding true diversity. Scientists now use AI that combines genetic and physical clues to accurately identify them, boosting conservation.
21st June, 2025
| Jenn Hoskins
Identifying Species Using Ear Stone Shapes
Scientists cracked the mystery of two identical scabbardfish species using tiny ear stones and genetic checks. This breakthrough allows precise tracking of their populations, vital for sustainable fishing and preventing overfishing in the Atlantic.
9th June, 2025
| Jenn Hoskins
Deep Dive Into the Living Fossil Family Tree
A new study rebuilds the coelacanth family tree with refined data, showing these ancient fishes experienced bursts of change that challenge their “living fossil” label and offering fresh insights into their evolutionary past.
9th June, 2025
| Greg Howard
Finding Common Trends and Ecosystem States to Guide Alaska Fisheries Management
NOAA researchers have streamlined decades of Gulf of Alaska data into clear trends using advanced models. This approach enables fishery managers to adjust groundfish harvests based on real-time ecosystem shifts.
7th June, 2025
| Jenn Hoskins
Changing Ocean Plant Communities Across Boundaries
Researchers find that tiny ocean plants react to nutrient and temperature shifts. In nutrient-poor zones, efficient Prochlorococcus thrives; as nutrients rise, larger phytoplankton take over, altering food webs and carbon capture.
6th June, 2025
| Jim Crocker
Coastal Microbial Mats in Karstic Areas: Uncovering Hidden Diversity
Researchers examining coastal microbial mats in Mexico’s Yucatan found that shifts in salinity and temperature create unique microbial communities that drive nutrient cycles and mineral formation, offering key insights for coastal conservation.
27th May, 2025
| Jenn Hoskins
Blood Cells Grow in Lab and Show Nerve Proteins After Hormone Treatment
A study uncovers that crab immune cells can transform into neural cells, enhancing our understanding of how crustaceans regenerate neurons and highlighting the immune system's role in brain health.
20th May, 2025
| Jim Crocker
Bacterial Genes Drive Disease in Fish
Rising sea temperatures are making Vibrio harveyi more deadly for tropical fish farms, warns a University of Sydney study. New highly virulent strains could devastate aquaculture and food security, highlighting the urgent need for better disease management amid climate change.
18th May, 2025
| Jim Crocker
Using DNA to Track Finless Porpoises and Oceanic Dolphins in the Korean Sea
Researchers in South Korea used environmental DNA from water samples to successfully track finless porpoises and dolphins around Jeju Island. This non-invasive method offers a cost-effective alternative to traditional marine monitoring, enhancing conservation efforts.
16th May, 2025
| Greg Howard
Deep-Sea Adaptation Revealed by Mitochondrial DNA of Two Sea Cucumbers
Researchers have decoded the mitochondrial DNA of deep-sea sea cucumbers, uncovering unique gene arrangements and genetic changes that help them thrive in extreme, dark, high-pressure ocean depths. This breakthrough enhances our understanding of deep-sea life and its adaptations.
12th May, 2025
| Jenn Hoskins
Climate Change Alters Feeding Areas for Highly Migratory Species
Climate change is shifting ocean habitats, affecting tuna migrations. UC Santa Cruz researchers use energy efficiency to map albacore tuna movements, predicting habitat loss in warm areas but gains in cooler zones. Insights aid marine conservation and fisheries planning.
12th May, 2025
| Jim Crocker
Immune Cell Diversity and Special Roles Revealed by Single-Cell Studies
Researchers have uncovered seven specialized immune cell types in Pacific oysters, enhancing our understanding of how these vital seafood providers fight infections. This breakthrough could boost oyster farming and marine conservation by improving disease resistance.
4th May, 2025
| Jim Crocker
Unique Viruses Shape Their Spread and Evolution in Underwater Hot Springs
A UW-Madison study uncovers nearly 50,000 unique viruses in deep-sea hydrothermal vents worldwide. These specialized viruses shape microbial communities and global carbon cycles, highlighting their vital role in ocean ecosystems and the need to protect these unique environments.
3rd May, 2025
| Greg Howard
Melting Sea Ice Changes Light for Water Plants
Arctic sea ice loss from warming is altering ocean light, favoring different phytoplankton and potentially boosting primary production more than expected. These shifts could disrupt the marine food web, highlighting the profound impact of climate change on Arctic ecosystems.
1st May, 2025
| Jim Crocker
Internal Clocks Control Activity and Seasonal Changes
Antarctic krill are essential to the Southern Ocean, feeding whales, seals, and more. Recent research shows they use internal biological clocks for daily and seasonal migrations, helping them adapt to changing environments and highlighting their resilience amid climate change.
28th April, 2025
| Jenn Hoskins
Salt Tolerance Helps Inform Spread of Invasive Species in Coastal Areas
New Cornell study reveals how invasive round goby fish might expand across North America by tolerating saltier waters in colder seasons. This insight is key to predicting and controlling their impact on local ecosystems and economies.
25th April, 2025
| Jim Crocker
Salt and Acidity Influence Microorganism Changes and Mineral Growth
Scientists studying microbial rock formations in Taiwan discovered that acidity, more than salt levels, shapes the microbial communities and carbonate buildup. These findings help uncover Earth's ancient environments and the evolution of ecosystems over billions of years.
19th April, 2025
| Greg Howard
Deep Genome Changes in Simple-Looking Shell Creatures
Scientists found that ancient chitons, marine mollusks with unchanged body forms for millions of years, have highly dynamic genomes. This reveals that stable physical traits can coexist with extensive genetic changes, challenging previous evolutionary beliefs.
18th April, 2025
| Jenn Hoskins
Heart Cell Study Shows Varied Response to Heat Stress
Rising ocean temperatures threaten scallops by damaging their hearts. A study from Ocean University of China uncovers how scallop hearts respond to heat, identifying key genes that could help breed more resilient scallops and protect marine life amid climate change.
17th April, 2025
| Jim Crocker
Whales Helping Sick Companions When Trapped in Fishing Gear
Humpback whales display remarkable resilience by supporting distressed mates tangled in ocean debris from fishing and shipping. A recent study reveals their adaptive behaviors in the face of growing human threats, highlighting the critical need for enhanced conservation measures.
14th April, 2025
| Greg Howard
How MicroRNAs Control DNA Repair Genes During Reproductive Development
Researchers at the University of Crete found that specific Fanconi anemia genes are active during female development in gilthead seabream and identified microRNAs that regulate them. This advances understanding of sex differentiation and offers tools to optimize fish farming.
14th April, 2025
| Greg Howard
How Salt and Sunlight Affect Preservation of Salt Bacteria’s Surface Markers
A recent study shows that extremely salty, acidic brines can effectively preserve chemical traces of ancient life by shielding them from UV damage. This insight enhances the search for past life on Mars and guides future exploration missions.
11th April, 2025
| Jenn Hoskins
Better Mapping of Endangered Marine Species Using Local DNA and Net Captures
Combining traditional trawl surveys with environmental DNA techniques boosted detection of the endangered Atlantic wolffish from 13% to 23%. This integrated approach offers a more effective way to monitor and conserve rare marine species.
10th April, 2025
| Jenn Hoskins
How the Environment Influences Antibiotic Resistance in the Baltic Sea
A Stockholm University study reveals how factors like salinity and temperature shape the spread of antibiotic resistance genes in the Baltic Sea, highlighting regional differences and offering insights to combat global antimicrobial resistance.
10th April, 2025
| Greg Howard
Comparing Sperm Hormones and Quality in Wild and Farmed European Eels
University of Bologna researchers discovered that farmed European eels have higher sperm counts and better movement than wild ones by analyzing key hormones. This insight could improve captive breeding methods, playing a vital role in conserving the critically endangered species.
