Head to this beloved Mexican island for the diving and snorkeling experience of a lifetime, part of an all-around amazing ...

Swimming with stingrays is an iconic Cayman Islands experience at Stingray City off Grand Cayman. (Cayman Islands Department of Tourism/Cayman Islands Department of Tourism) ...

FOR long we have accepted as well-established and equivalent the five classes of vertebrate animals, but recent zoological research, particularly on the palaeontological side, has modified many ...

At first glance, it is not obvious that students are dissecting invertebrates in Greg Barord ... no squishy innards of crayfish, starfish, earthworms or squids pinned to a tray, and no disgusted ...

The sunflower sea star is a big starfish — more than 3 feet across — that roams the ocean floor in orange, yellow and purple. These invertebrates can grow as many as 24 arms, and they’re ...

For the last decade, California's offshore seafloors have been missing a massive, colorful predator that keeps kelp-munching sea urchins in check. The sunflower sea star is a big starfish—more ...

The sunflower sea star is a big starfish — more than 3 feet across — that roams the ocean floor in orange, yellow and purple. These invertebrates can grow as many as 24 arms, and they’re ...

The study of the physiology and ecology of animals that don't have backbones, ranging from worms to sea stars, and of parasites, which can often provide insights into complex ecosystems. (Sea star ...

The Oldest Known Vertebrate on Earth is Over 500 Years Old Something from space fell on Kenya and nobody's quite sure what it is yet Egypt's most mysterious pyramids and tombs – and what was ...

From comparison of the eyes of lampreys and jawed vertebrates, it is clear that a 'vertebrate-style' camera eye was already present in the last common ancestor of these taxa, around 500 million ...

But headless animals called brittle stars have no brains at all and still manage to learn through experience, new research reveals. Relatives of starfish, brittle stars spend most of their time hiding ...