One of the most notorious sea urchin mass deaths took place in the Caribbean Sea in 1983, affecting a black-spined urchin species called Diadema antillarum. At the time, scientists were unable to ...

Their fuzzy spines trap air, preventing the urchin from suffocating under the sand. Sea potatoes are also known as heart urchins due to the shape of their test. You can find them in the waters around ...

Their results revealed a clear trend: in blue groper, long-spined sea urchins were detected in just 5.1% of fish, while other sea urchin species were present in 30%. Similarly, pink snapper ...

In many species, their rotund bodies are covered in spikes, they exist at all sea depths, and their spines might even help treat bone fractures. But few animals appreciate the spiny edges of sea ...

Researchers with the University of Florida and the Florida Aquarium are figuring out how to raise microscopic long-spined sea urchin larvae in specially designed tanks. Courtesy of the University ...

Spiny green sea urchins face a new challenge from climate change: As the oceans become more acidic, urchin larvae struggle to digest their food, new research finds. The study is the first to prove ...