Invertebrates

Animals without backbones make up a huge percentage of the ocean’s biodiversity. They aren’t just small (like pteropods) or squishy (like jellyfish); the giant squid and corals that build huge reefs are also invertebrates.

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Seaside Lichens

Horizontal bands of color represent different species of lichen that have...
Japanese scientists videotaped this female giant squid, alive, at the water's surface

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Giant Squid

Giant squid live up to their name: the largest giant squid ever recorded by scientists was almost 43 feet (13 meters) long,...
An underwater photo of coral recovering from a bleaching event.

A Pleasant Surprise: The Recovery of Bleached Panamanian Corals

These corals are still in recovery after a mass bleaching in Panama, in the summer of 2010. You can see some bleaching on the tops, but the sides are looking good. Credit: Amanda Feuerstein...
Common cuttlefish

So You Think You're Smarter Than a Cephalopod?

Like other cephalopods, the common cuttlefish ( Sepia officials Linnaeus, 1758) possesses serious brain power. Credit: Hans Hillewaert, WoRMS for SMEBD The blanket octopus can rip a poisonous tentacle from a Portuguese man-o-war and...
A zoomed-in image of the crown-of-thorns sea star.

A Plague of Sea Stars

Scientists have been studying why populations of crown-of-thorns sea stars ( Acanthaster planci ) have mushroomed in recent decades. Coral reefs can suffer when the sea star's numbers explode; the echinoderm has a healthy...

The Dumbo Octopus: An Underwater Dance

This short video takes you two hundred miles off the coast of Oregon and some 6,600 feet below the water's surface to observe the Dumbo octopus ( Grimpoteuthis bathynectes ). Little is known about...
Juvenile plane-head filefish

A World Adrift: Life in the Sargassum

The open ocean is surprisingly barren to the naked eye. Every now and again you will encounter a school of fish and their attendant predators, but most of the life that you find is...

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