Researchers have provided the first experimental evidence that a species of endangered sea star protects kelp forests along North America's Pacific Coast by preying on substantial numbers of ...

A quiet yet powerful rescue mission is underway in the cold waters off the Pacific coast. The nonprofit Sunflower Star Laboratory is leading the charge to revive the critically endangered sunflower ...

The sunflower sea star (Pycnopodia helianthoides) can be found throughout intertidal and subtidal coastal waters of the northeast Pacific Ocean, from Alaska to at least northern Baja California, ...

What you can see in this YouTube clip is very different from most of the underwater footage that you will come across online. It features a diver picking up sea urchins using a metal tool and breaking ...

They are members of the phylum Echinodermata, which first appeared during the Cambrian explosion. Their list of close relatives includes starfish, sand dollars (themselves irregular, flattened sea ...

Since early 2022, sea urchins have been mysteriously dying off across the Caribbean. Now scientists say they have identified the main culprit: a type of relatively large, single-celled marine ...