Sea Sponge Looks Like an Underwater Cookie Monster, esponja marina que simula una cara.

Stove Pipe Sponge, Aplysina archeri aka "Cookie Monster of the Sea" Curacao, Caribbean

Tropical Dreams: Philippines - Underwater Wonder World

"Anemone City" by Henry Jager. From the dive site Anemone city at Wadi Gimal, Red Sea, Egypt ─ In this picture: Two-banded Anemonefish, Amphiprion bicinctus

Barreleye   the Barreleye fish has a completely transparent head. Looks like leaves in its brain.

The transparent-headed fish. With a head like a fighter-plane cockpit, a pacific barrel eye fish shows off it's highly sensitive, barrel like eyes topped by green orblike lenses.

Fifty-Two Beautiful Ocean Animals That You Can See when You Scuba Dive

No idea why this thing is called the Yellow Boxfish! But these bright yellow, polka-dotted, boxy balloon-shaped fish are found in tropical and temperate marine waters of the Indo-West Pacific.---maybe because it's yellow and box like?

an octopus in a clam shell

75 Stunning Oceanic Invertebrates That Deserve A Closer Look

Post with 44 votes and 6025 views. Octopus in a clam shell. Looks like a lil' octopus sleeping bag!

"Sea Toad" Angelfish; a deep sea dweller

Last week, the IUCN 2009 Seamount expedition ended, with scientists sampling two final seamounts in the Indian Ocean. Caught at was this deep-sea anglerfish, also known as a seatoad. Sarah Gotheil From BBC news