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Showing results for "Echinoderms"
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The sea star Odontaster validus and sea urchin Sterechinus neumayeri are often found living in association with one another along the Antarctic coastline, here during the Census of Marine Life.
overview

Echinoderms

Beachcombers and tide pool explorers may be familiar with sea stars, sea urchins,...
February 2022
Small orange brittlestars on the coast of the Atlantic.
Photo

An Invasive Brittlestar

These brittlestars (Ophiothela mirabilis) are not where they belong. These animals,...
Nine small invertebrates held on two fingers.
Personal Perspectives

On Biodiversity: Understanding its Meaning and Importance

The ocean is home to a phenomenal diversity of marine organisms. They have evolved...
August 2011
This small sea star, little more than an inch across, is orange on top and whitish underneath.
Photo

Little Sea Star

It’s an honor to have something or someone named after you. Dr. David Pawson,...
This purple urchin Paleopneustes cristatus is seldom seen by itself, and can be found in groups of hundreds.
Photo

Purple Sea Urchin

This purple urchin Paleopneustes cristatus is seldom seen by itself, and...
Nine small invertebrates held on two fingers.
Photo

A Handful of Biodiversity

Fitting nine of anything on two fingers is impressive. These mollusks and...
Illustration of the Paleozoic shallow water habitat.
Photo

A Mississippian Marine Habitat (359 - 318 Million Years Ago)

Crinoids (echinoderms related to sea stars and sea urchins) dominate the Paleozoic...
A zoomed-in image of the crown-of-thorns sea star.
Article

A Plague of Sea Stars

Sea stars are important members of marine ecosystems, especially in the tropics. We...
May 2011
A sea toad from the deep waters off of Curacao.
slideshow

Collections from Curaçao

During the 2012 field season of the Deep Reef Observation Project (DROP) in...
Mon, 08/13/2012 - 09:30
A pair of sea butterflies float in the Arctic ocean.

Searching for the Ocean Acidification Signal

Over the past century, the pH of the ocean has decreased from 8.2 to 8.1. This...
December 2012
Ocean Portal summer 2011 intern Brandon Adkins poses next to the aquarium in the Smithsonian's Sant Ocean Hall.
Young Voices

An Intern Explores Ocean Careers

I’m a high school student interested in pursuing marine science. I have loved the...
August 2011
A submersible explores the deep reefs off of Curacao in the Caribbean.
Article

A New Ocean Zone Described with the Help of a Submersible

Beneath vibrant coral reefs, but above the lightless depths of the sea, lies the...
June 2018

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