Wake up, babe. New MBARI species just dropped. 🤩
MBARI researchers have discovered a remarkable new species of sea slug that lives in the deep sea. Bathydevius caudactylus swims through the ocean’s midnight zone and lights up with brilliant bioluminescence.
With a voluminous hooded structure at one end, a flat tail fringed with numerous finger-like projections at the other, and colorful internal organs in between, the team initially struggled to place this animal in a group. Because the animal also had a foot like a snail, they nicknamed this the “mystery mollusc.”
The team first observed the mystery mollusc in February 2000 during a dive with the institute’s remotely operated vehicle (ROV) Tiburon offshore of Monterey Bay at 2,614 meters (8,576 feet) deep.
They leveraged MBARI’s advanced and innovative underwater technology to gather extensive natural history information about the mystery mollusc. After reviewing more than 150 sightings from MBARI’s ROVs over the past 20 years, they published a detailed description of this animal.
Learn more more about this dazzling new denizen of the deep on our website.
Slug squid!
These have been sighted for decades but photos were so vague no one could even guess what it was! Only now do we apparently understand exactly what it's related to and which end is even which. And oh my god. It's a big swimming round mouth propelled around by a tentacle fan on its back. And it's a snail. There are lots of weird swimming snails but I'm pretty sure this is a completely unique shape. This is an abyssal animal as odd as any other that have been memed and marketed, like the giant isopods or vampire squids or barreleyes. I can't remember the last time it felt like something expanded the roster of iconic deep sea characters like this.