Diadema antillarum, also known as the lime urchin, black sea urchin, or the long-spined sea urchin, [2] is a species of sea urchin in the family Diadematidae. This sea urchin is characterized by its exceptionally long black spines. It is the most abundant and important herbivore on the coral reefs of the western Atlantic and Caribbean basin.

Sea urchins move slowly, crawling with their tube feet, and sometimes pushing themselves with their spines. They feed primarily on algae but also eat slow-moving or sessile animals. Their predators include sharks, sea otters, starfish, wolf eels, and triggerfish.

The Black Longspine Urchin, also known as Long-spined Sea Urchin, has a body which is predominately black with a red eyespot in the center. The spines on these urchins are long, thin and completely black. They are a very delicate looking urchin, which are actually very capable of …

Black long-spined sea urchins are invertebrates in the family of echinoderms. They are related to sea stars, sea cucumbers, and sand dollars. They are easily identifiable by their black color and extremely long spines. They play a key role in coral reef ecosystems by controlling algae growth.

Diadema antillarum, also known as the lime urchin, black sea urchin, or the long-spined sea urchin, is a species of sea urchin in the family Diadematidae. This sea urchin is characterized by its exceptionally long black spines.

What does a sea urchin look like? The most easily recognisable sea urchins are round, often brightly coloured and covered in sharp-looking spines. In fact, ‘urchin’ comes from an old word for hedgehog owing to their similar-looking spiky armour. However, there are more than 1,000 species of sea urchin, with varying characteristics.

Long-spined black urchin, Diadema antillarum. TRAITS. The body of the sea urchin is round in shape, and illustrates a pentameric type of radial symmetry (five-fold arrangement). Possesses a rigid internal body skeleton called a test, covered with long movable spines.

Also known as the Black Longspine Urchin. The Spiny Sea Urchin is found in the Mediterranean, Indo-Pacific region growing up to 20cm in length. Found singly or in large groups, moving across rubble, sand, shingle, and seagrass beds, in bays and...

Diadema antillarum, also known as the lime urchin, black sea urchin or the long-spined sea urchin, is a species of sea urchin in the Family Diadematidae. This sea urchin is characterized by its exceptionally long black spines. It is the most abundant and important herbivore on the coral reefs of the western Atlantic and Caribbean basin.

The Black Longspine Urchin, is also commonly known as the Long-spined Sea Urchin, and has a body which is predominately black with a red eyespot in the center surrounded by bright blue markings. The spines on these urchins are long, thin and completely black, while they may look like a very delicate species, they are in fact very capable of ...