fauna
fauna on World Data Ocean: a running collection of 6 stories we have gathered and hand-picked because they are worth your time. Every post here touches on fauna 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 fauna, 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.
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.
Galapagos Fur Seal or Sea Lion (Ecuador)?
The Galapagos fur seal ( *Arctocephalus galapagoensis*) is a unique species endemic to the Galapagos Islands, Ecuador. Often confused with sea lions, fur seals are smaller and possess denser fur, an adaptation for the cooler waters they inhabit. Distinguishing features include a smaller head relative to body size and a less boisterous demeanor compared to their sea lion counterparts. Identifying these animals can be tricky, as highlighted in similar identification requests—like our recent discussion on marine wildlife in Costa Rica.
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.
Meet the Solenostomus snuffleupagus, a tiny ghost pipefish named for its resemblance to the beloved Sesame Street character.
Introducing *Solenostomus snuffleupagus*, a newly validated species of ghost pipefish recently documented by /u/nationalgeographic. This diminutive creature, measuring just a few centimeters, earns its whimsical name from a striking resemblance to the iconic Sesame Street character. Empirical observations confirm its unique morphology and habitat within specific marine ecosystems. Further exploration of marine biodiversity, as demonstrated in articles like "Sharks in Raja Ampat," continues to reveal the remarkable complexity and interconnectedness of ocean life.
What is going on with this Puget Sound brittle star?
A curious discovery from Puget Sound: a diminutive brittle star, smaller than a lentil and found at 25 feet depth, has prompted questions about its anatomy. Specifically, observers note a potential opening extending through the creature’s body. Identification of the species remains unknown. This observation highlights the remarkable biodiversity even within seemingly small marine organisms, as showcased by recent discoveries like the Solenostomus snuffleupagus, a tiny ghost pipefish recently featured on our site. Further investigation is needed to fully understand this specimen’s biology.