Manta ray
Mobula birostris
Cephalic lobes unfurl like funnels, guiding plankton-rich water toward the mouth.
Field photographA photographic ocean field guide
Below the line
Surface / 0 mScroll through a real-world image archive. Ten marine creatures appear as light thins, color fades, and the ocean opens beneath you.
Begin descent
Sea turtle
Chelonia mydas
At rest, a green turtle can slow its heartbeat and remain submerged for hours.
Field photograph
Shark
Carcharhinus melanopterus
Pores around the snout detect the tiny electrical fields produced by living muscle.
Field photograph
Jellyfish
Scyphozoa
No heart, brain, or bones—just a nerve net reading currents, light, and touch.
Field photograph
Plankton
A drifting community
Microscopic phytoplankton collectively produce about half of Earth’s oxygen.
Microscope photograph
Coral
Anthozoa
A coral head is a city of tiny polyps, each building onto a shared limestone skeleton.
Field photograph
Sea star
Asteroidea
Hundreds of tube feet move by hydraulic pressure, gripping rock with remarkable force.
Field photograph
Seahorse
Hippocampus
The male receives the eggs, carries the embryos, and releases fully formed young.
Field photograph
Octopus
Octopus vulgaris
Three hearts circulate blue, copper-rich blood through a body built to explore.
Field photograph
Blue whale
Balaenoptera musculus
The largest animal known to have lived moves through the ocean on a diet of krill.
Field photograph
The water column continues
Look
deeper.
Most of the ocean has never been seen directly. Every descent reveals how much of our own planet remains unfamiliar.
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