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Diadema antillarum (Philippi, 1845) Gulf of Mexico Diadema ascensionis (Mortensen, 1909) Central tropical Atlantic Diadema mexicanum (Agassiz, 1863) West coast of tropical Americas Diadema palmeri (Baker, 1967) South-west Pacific, especially New Zealand Diadema paucispinum (Agassiz, 1863) Central Pacific, and possibly North Indian Ocean and ...
Diadema antillarum has a "shell," similar to most other sea urchins. What distinguishes the Diadema is the length of its spines. Most sea urchin spines are 1–3 cm, but the spines in this species are usually 10–12 cm in length, and can grow as long as 30 cm in very large individuals.
Diadema savignyi is a species of long-spined sea urchin belonging to the family Diadematidae. Common names include long-spined sea urchin , black longspine urchin and the banded diadem . It is native to the east coast of Africa, the Red Sea, the Indian Ocean and western Pacific Ocean.
The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow. ... Diadema Gray, 1825 Diadema palmeri ...
These long-spined sea urchins, or Diadema antillarum, are prickly black creatures that hide out in reefs across the Caribbean. They play a key role as “lawnmowers” of the reef, Breitbart said ...
Don Levitan, a professor of biological sciences at Florida State University, captures a sea urchin known as Diadema antillarum. Levitan is researching the cause and impact of two massive dieoffs ...
Diadema setosum is a species of long-spined sea urchin belonging to the family Diadematidae. It is a typical sea urchin, with extremely long, hollow spines that are mildly venomous . D. setosum differs from other Diadema with five, characteristic white dots that can be found on its body.
Echinothrix diadema is a long spined urchin. With its spines, the typical diameter is 10–20 cm (3.9–7.9 in). [2] The internal organs are enclosed in the test, covered by a thin dermis and epidermis. [3] It is generally black or blue-black in colour, and always dark (the spines show a blue sheen in the light).