by Steve De Neef

(via Just a baby sailfish in the palm of a hand : reddit pics)

Baby sailfish, you are too cute, get out. 

Touch and go

Skeleton of Mola Mola as Mola rotunda - the Ocean sunfish

Spolia Atlantica. Bidrag til Kundskab om Klump- eller Maanefiskene (Molidae). Japetus Steenstrup and Chr Lutken Published 1898

The Abyss // Manta Madness photos by Mako Miyamoto

Synchronized swimming by 

Andrey Sidorov

by MenloParkCA

Migaloo, the albino humpback whale, by John Edwards and Tom Lancanshire, via My Modern Met.

Dolphins @ Sataya by Damien Mauric

Flashlight Fish. The spots under the eyes contain bioluminescent bacteria.

source

Photographer unknown

Manta Rays Maldives (Source)

Chain catshark! 

You don’t have to get out of the water—these sharks (Scyliorhinus retifer) are very small. The catshark was first witnessed to be fluorescent during an August 2005 research cruise in the Gulf of Mexico, but no photos were taken. This is one of the first images to capture this shark’s biofluorescence! Captured by David Gruber, Vincent Pieribone and John Sparks.

The Blue Planet: firefly squid.