umajor: Corey Arnold, Salmon Shark

theoceaniswonderful: Nembrotha rutilans by alastair.pollock

deathnotendsit: Some of the most evolved eyes in the entire animal kingdom belong to cuttlefish. Their strange, w-shaped pupils are unable to register color, but can see the polarization of light, which allows them to see contrasts, even in dim light. While humans reshape their eye lenses to see things in better focus, the cuttlefish reshapes its whole eye. Additionally, internal sensors in the eye allow the creatures to observe things in front of them and behind them at the same time.

theoceaniswonderful: Black Tip by mathetdjam

100leaguesunderthesea: Cratena Peregrina - Nudibranch by Hasan Yokes on Flickr.

virtuism: Seashells (by ctapper00)

underwaterpix: Pipefish found in Anilao, Philippines Brought to you by Underwater Photography Guide, the best online resource for divers and underwater photographers.

what started as a collection of cnidarians, but is now a lot of various oceany things.