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Sea urchins or urchins (/ ˈ ɜːr tʃ ɪ n z /) are typically spiny, globular animals, echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal to 5,000 metres (16,000 ft; 2,700 fathoms). [1]
Phyllacanthus imperialis, also known as the Sputnik urchin, imperial lance urchin, imperial sea urchin, imperial urchin, pencil sea urchin, lance urchin, knobby sputnik sea urchin, mine urchin, and land mine sea urchin, is a species of sea urchins in the family Cidaridae. [2] Test (shell) It has distinctive thick, blunt spikes. The test is ...
Toxopneustes pileolus, commonly known as the flower urchin, is a widespread and commonly encountered species of sea urchin from the Indo-West Pacific. It is considered highly dangerous, as it is capable of delivering extremely painful and medically significant stings when touched.
Reef Rescue is trying to turn the pea-sized urchins into “reef competent” juveniles it can one day release into the wild. “ These are one of the most important critters out there.
Last year, sea urchins in the Caribbean started getting sick — shedding their spines, dying off and throwing reef ecosystems into chaos. “The case is closed,” said study author Mya Breitbart ...
Expert warns urchins vital to coral reef ecosystems now ‘functionally extinct’ in Red Sea
The reef urchin is found on reefs in the Caribbean Sea from southern Florida to Venezuela at depths down to about 15 metres (49 ft). It is not as common as the rock-boring urchin and seems to be absent from the West Indies to the east of the Virgin Islands. [3]
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.
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