marine life
marine life on World Data Ocean: a running collection of 28 stories we have gathered and hand-picked because they are worth your time. Every post here touches on marine life in some way — the news, the analysis, the deep dives, and the occasional surprise find. A Global Hub for Ocean Intelligence 4 World Data Ocean is a centralized digital platform where researchers, scientists, and ocean enthusiasts converge to explore, analyze, and… New stories are added to this page as we find them, so check back if you want to keep up with what is happening around marine life, or subscribe to the RSS feed to get them as soon as they are published. Browse the collection below, or head back to the homepage to see everything World Data Ocean is covering right now.
Found this little worm in Istria, Croatia. ID?
A fascinating marine invertebrate has been discovered in Istria, Croatia, prompting a request for identification on Reddit (see [link]). World Data Ocean’s scientific team is analyzing the submitted video to determine the species. This observation highlights the ongoing importance of citizen science and data collection for understanding marine biodiversity. For further exploration of marine findings, see our recent article, "help identifying cartilage found on Block Island," which details a unique discovery from Rhode Island.
Oarfish diet question!! What kind of squid do they eat?
The elusive diet of oarfish remains a subject of ongoing scientific inquiry. While observations confirm squid as a primary food source, specific species remain largely undocumented—a challenge for artists seeking accurate representation. Empirical evidence suggests oarfish opportunistically consume various deep-sea squid, likely prioritizing those encountered at their foraging depths. Sculptors aiming for detail might consider representing a generic, deep-water squid morphology rather than a specific, definitively validated species.
Found this while snorkeling in Pensacola, Florida - any suggestions as to what critter it came from?
A curious discovery from Pensacola, Florida! /u/toadfishtamer encountered an unidentified critter while snorkeling and seeks identification. Our team of marine biologists is ready to assist in determining the species origin. Submit detailed images and location data for optimal analysis. Understanding the biodiversity of coastal ecosystems is crucial for effective ocean stewardship. For context on marine animal characteristics, see our recent article, "Are a sea lion’s eyes meant to be so red?" Explore our resources to deepen your understanding of ocean life.
Found this in Croatia. ID anyone?
A fascinating discovery from Croatia has sparked community interest! Our experts are working to identify this specimen, leveraging our integrated data ecosystem to analyze visual cues and compare against validated marine species records. Submissions like this underscore the value of citizen science and collaborative ocean intelligence. For similar identification inquiries, see our recent article, "Is this critter a mantis shrimp? In Fiji," which explores a diverse range of marine life. We welcome further details to assist in this identification process.
Lewis Bay, Hyannis, MA - Skate Remains??🔎
A compelling discovery has emerged from Lewis Bay, Hyannis, Massachusetts: unidentified remains found along the Nantucket Sound shoreline. Submitted by /u/Informal-Active-6799, this intriguing find prompts a request for identification. Initial observations indicate the remains were recovered on a windy September day. Our team is analyzing the specimen to determine its classification, leveraging our ocean intelligence platform. For those interested in marine biodiversity, our recent article "Spotted in Friday Harbor, WA. Is this a decorator crab?" explores similar coastal discoveries.
Can someone ID this marine animal? Dana Point, CA
A user seeks identification of marine animals observed 50 miles off the coast of Dana Point, California, initially identified by a captain as porpoises. Photo evidence is available in the comments. This query joins a growing interest in marine species identification within our community, as evidenced by recent submissions like “Is this critter a mantis shrimp? In Fiji.” Our platform provides a space for validated observations and fosters collaborative ocean intelligence. Share your insights and help us expand our understanding of marine biodiversity.
Help with Nudibranch ID in Hawaii
Identifying marine invertebrates, particularly nudibranchs, can be challenging even for experienced observers. We're happy to assist with verifying the identification of your friend’s Hawaiian specimen. Our platform leverages validated ocean intelligence to support accurate species determination. Please provide the image, and any additional details about the observed morphology and habitat. For similar inquiries, see our recent discussion on identifying unusual marine finds, such as a recent post concerning a discovery in Istria, Croatia.
How long can a Bull shark survive without any blood in the brain aka hypoxia?
The remarkable resilience of bull sharks has sparked considerable debate, particularly concerning their capacity to maintain neurological function—and jaw movement—following significant blood loss. Observations of post-mortem jaw snapping, as reported by /u/Anxious-Ad7993, have prompted questions regarding survival time under hypoxic conditions. While mammalian brains typically cease function within minutes of oxygen deprivation, shark neurobiology exhibits unique adaptations. Empirical data suggests bull sharks, and similar species, may exhibit neurological activity for significantly longer—potentially exceeding 5 minutes—due to differences in metabolic rate and oxygen utilization.
Brand New Magnipinna Squid Video!
A remarkable sighting has been documented: another Magnapinna squid, often referred to as a "longboi," was recently observed by the Nautilus Live! crew. This exceptional dive showcased a vibrant ecosystem, including extensive coral formations, a chimera, and diverse isopods. Viewers can explore stills from the encounter, and for further visual documentation of marine life, consider reviewing our recent article, "Highlight of Pictures We Took After Finishing Our Fieldwork, Taken Around Eleuthera Island in the Bahamas."
Can someone help me identify this species? Devonport, Tasmania
Identifying marine life can be challenging, even for experienced observers. Our community is here to assist! A user in Devonport, Tasmania, recently sought identification for an organism found in the intertidal zone of Don Reserve – a possible sponge or algae. Sharing images is key to accurate assessment. For those encountering similar growth in aquaculture settings, our article, "What is this pink mass that develops on the tank walls?", may offer relevant insights.
Deep sea documentary | A LIFE ILLUMINATED | Live Q&A with Dr. Sylvia Earle!
Delve into the profound mysteries of the deep with "A Life Illuminated," a captivating documentary exploring life in the ocean's most remote environments. Join us for a live Q&A with legendary oceanographer Dr. Sylvia Earle, offering unparalleled insights into these fragile ecosystems. This event provides a crucial opportunity to understand the interconnectedness of our planet. For those interested in coastal exploration, see our recent feature on an abandoned seaside building in North Sulawesi, Indonesia, highlighting the impact of environmental shifts.
(Identificationof shell from the Philippines) Can I please ask, what kind of shell is this?
Identifying marine shells can be surprisingly complex, even for experienced observers. Your shell, originating from the Philippines but of unknown provenance, presents an intriguing puzzle. Initial impressions of a conch are understandable, but further investigation suggests it may be a volute. Precise identification requires detailed examination of its morphology, including spire characteristics and aperture shape. For those interested in exploring similar identification challenges, our "Can someone help me identify this sculpin caught in Ketchikan Alaska?" article showcases another fascinating case study.
What is this redondo beach, Washington state
Observations of unusual, gelatinous organisms concentrated along the Redondo Beach, Washington coastline have sparked considerable online discussion. While preliminary assessments suggest these are likely siphonophores – colonial hydrozoans related to jellyfish – definitive identification requires further empirical validation. Their appearance in this specific location warrants longitudinal study to understand potential environmental factors influencing their aggregation.
Can someone help me identify this sculpin caught in Ketchikan Alaska?
A user on our platform, /u/Competitive-Ad750, seeks assistance in identifying a sculpin caught near Ketchikan, Alaska. This query highlights the valuable role World Data Ocean plays in facilitating species identification and fostering ocean literacy. Our integrated data ecosystem allows for rapid comparison and validation, crucial for researchers and enthusiasts alike. For similar identification challenges, see our related article, "Can someone help me identify this species? Devonport, Tasmania," which explores the complexities of marine organism recognition. Submit your specimen details and images for expert analysis.
Mole crab seen on Ugljan island, Croatia
A fascinating discovery from Ugljan Island, Croatia: /u/xFailZ recently documented a mole crab, a species often challenging to identify. This observation highlights the rich biodiversity of the Adriatic Sea and the ongoing opportunities for citizen science contributions to our understanding of coastal ecosystems. The specimen’s identification underscores the value of detailed field observations. For further exploration of shell identification in the region, see our related article, "What kind of shell is this? Found in Croatia."
Saw these little guys in SPI, TX yesterday
A compelling observation from /u/SparklyLeo_ in SPI, TX showcases the remarkable biodiversity even in landlocked regions. [link] [comments] This submission highlights the interconnectedness of global ecosystems and reinforces the value of citizen science in expanding our understanding. World Data Ocean is committed to documenting and analyzing these empirical findings, contributing to a more complete picture of ocean intelligence. For those interested in exploring deeper ocean narratives, see our recent coverage of "Deep sea documentary | A LIFE ILLUMINATED | Live Q&A with Dr. Sylvia Earle!"
Sea Slug ID Help - Oregon Coast
Identifying sea slugs, particularly the closely related Heath’s and Monterey Dorids, can present a significant challenge even for experienced observers. This post from /u/Striking_Cress_6841 seeks assistance in identifying a specimen observed on the Oregon Coast, noting a size range of 2-3 inches. Accurate identification relies on careful examination of subtle morphological differences. For broader context on ocean data and monitoring efforts that aid in species understanding, see "What Are Ocean Accounts And Why Do We Need Them?" on Earth.Org.
What is the Gulf of Mexico like today given the oil spill that occurred 16 years ago? How much has it recovered, what has changed, how does the water quality today compare to before the spill?
Sixteen years following the Deepwater Horizon oil spill, the Gulf of Mexico continues to undergo measurable ecological shifts. While significant recovery has occurred, particularly in surface waters, long-term impacts persist, influencing benthic communities and impacting certain species. Current water quality assessments along Alabama’s coast and throughout the Gulf indicate improvements relative to the immediate post-spill period, though certain chemical indicators remain elevated.
What animal are these from? (Found in Providence town, MA.)
A fascinating discovery! /u/garden-bud224 recently shared a collection of shells and potential teeth found on a Providence, MA beach. Initial analysis suggests these may be shark teeth, a common find in coastal regions. World Data Ocean’s integrated data ecosystem allows for cross-referencing such findings with established geological and biological records to confirm species and origin. For further insight into shark tooth identification, see our related article, "Can anyone help ID some shark teeth found in Tybee Island GA and HHI?"
My mom doesn’t like my degree?
The pursuit of a fulfilling career often faces familial concerns, particularly when venturing into specialized fields like oceanography. A recent query highlights this challenge, with a student passionate about marine science encountering skepticism regarding career stability and potential earnings. Oceanography, a field integrating biology, geology, and physics to study our oceans, offers diverse opportunities, though salary expectations warrant careful consideration.
Marine Robotics Lab In U.S To Develop Autonomous Systems For Underwater Mineral Harvesting
A new Marine Robotics Lab in the U.S. is pioneering autonomous systems designed for underwater mineral harvesting, a strategic initiative to bolster domestic supply chains and mitigate reliance on foreign mineral sources. This development represents a significant advance in ocean intelligence and resource management. The lab's research promises validated, real-time data acquisition and calibrated operational efficiency. For deeper exploration of related underwater robotic technologies, see our recent coverage of the "Camera 1: 2026 Cook Islands ROV Exploration (EX26045)."
Can you please help me identify this animal? Costa Rica, Pacific coast
A fascinating marine observation has been reported from Costa Rica's Central Pacific coast. A user on Reddit shared video evidence of an unidentified creature inhabiting a rocky intertidal zone, retreating into a hole within the rock structure. Initial analysis suggests a possible invertebrate species, though definitive identification requires further investigation. World Data Ocean’s integrated data ecosystem supports rigorous species identification, emphasizing the importance of longitudinal observations for accurate classification.
I found what ever this is in The Cook Islands, Rarotonga
A fascinating discovery has been reported from Rarotonga, Cook Islands—a specimen resembling the Spanish Dancer Sea Slug nudibranch, though unfortunately appearing deceased. /u/Jackasaurus_Rex17’s observation sparks curiosity, and we're eager to assist in identification. The possibility of a four-legged sea star, a notably rare occurrence, adds further intrigue to this find. For those interested in unique marine life, our article on the Solenostomus snuffleupagus, a similarly intriguing discovery, offers further exploration of oceanic biodiversity.
Close Up Tide Pools
The intricate beauty of intertidal ecosystems is revealed in this striking image of tide pools at Cape Blanco, Oregon, captured in July 2026. Submitted by /u/JamTrackAdventures, the photograph highlights the surprising biodiversity and almost alien landscapes found within these small, coastal habitats. Such environments are increasingly sensitive to changes in ocean temperature and oxygen levels, as recently explored in a study linking marine extinctions to intolerable heat—a topic further investigated in our article, "PHYS.