Above the great sheath of stars that defines the ship’s keel is a ragged circle of stars. That’s Vela the Sails, though there ...

An curved arrow pointing right. Scientists were observing a field of brittle sea stars off Jarvis Island when they saw something they never expected: One of the brittle stars snatched a squid ...

7 “The brittle star can regenerate the arm in just a month, which is very, very fast,” said Parey. In comparison, sea stars take up to a few months to regrow a lost arm, making brittle stars an ...

Degrees of separation Although the long-tentacled brittle star (Amphiura filiformis) differs from the stout sea pansy (Renilla) in both appearance and phylogeny, researchers have now demonstrated that ...