Hydroids
No, this is not a medical condition. Nor is it a Martian spaceship from the 1953 version of War of the Worlds. It’s a hydroid—a very alien-like creature closely related to jellyfishes. After attaching themselves to rocks, they use their two-tiered tentacled mouths to snatch food drifting nearby. This fine specimen was seen at the Leoso seamount, an area that straddles the boundary between the American Samoa Exclusive Economic Zone (EEZ) and the Cook Islands EEZ.
