the best science on the web about
sea urchins

Army of Sea Urchins
Image: BBC

Army of Sea Urchins

Sea urchins might appear to be delicate "flowers" of the ocean, but in fact, they are animals with razor sharp spines capable of detering most would-be predators. They can also have voracious appetites.

Begin your exploration of sea urchins with this video, which includes amazing video of the usually slow-moving organisms in action.

BBC
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Insight From the Sea Urchin

Insight From the Sea Urchin

How does a spiky invertebrate unlock the secrets of genes, reproduction, or even cancer? Find out how scientists are using the sea urchin to solve scientific mysteries.
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Video
Exploratorium
How Does a Sea Urchin See?

How Does a Sea Urchin See?

Sea urchins have a round body, a mouth, and lots of spines — but they don't have eyes. So how do they know where they're going? Scientists think they've found the answer? More...

Article
LiveScience
Monster Worm and Sea Star Frenzy

Monster Worm and Sea Star Frenzy

In this vivid, time-lapse video, sea stars, monster worms, and sea urchins swarm the Antarctic Ocean floor. A rare, tasty surprise has triggered their feeding frenzy. More...

Video
BBC
Sea Urchin

Sea Urchin

Did you know the transparency of sea urchin eggs makes it easy for scientists to study them? Find out everything you ever wanted to know about sea urchins, including their reproduction and development. More...

Article
University of Wisconsin, Madison
Sea Urchin Facts

Sea Urchin Facts

Sea urchins are echinoderms. They're easily identified by their spiny bodies that move slowly across the ocean floor. Explore their habitat, predators, and prey. More...

Article
Standford University
Sea Urchin Fertility

Sea Urchin Fertility

Female sea urchins produce 500 million eggs in their lifetime, setting the eggs adrift to be fertilized. By setting the larvae free, sea urchins populate new areas, diversifying the gene pool. More...

Video
National Geographic
Sea Urchin Photos

Sea Urchin Photos

Sea urchins are among the more colorful creatures that inhabit the ocean. Tour this image gallery to see and learn more about the different types of sea urchins. More...

Images
National Geographic
Sea Urchins

Sea Urchins

The Australian island of Tasmania is under attack from invading sea urchins. See how scientists are trying to stop the unwanted sea urchins riding a warm current from Australia to New Zealand. More...

Video
ABC Australia
The Mysterious (Yet Pointy) Sea Urchin Quiz

The Mysterious (Yet Pointy) Sea Urchin Quiz

Are you ready to put your knowledge of sea urchins to the test? After you've read up on these tiny sea dwellers, try this quiz. More...

Interactive
FunTrivia.com

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