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Echinometra
''Echinometra'' is a genus of sea urchins in the family Echinometridae. Species The following species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ... are listed in the World Echinoidea Database: References {{Taxonbar, from=Q3046974 Echinometridae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Mathaei
''Echinometra mathaei'', the burrowing urchin, is a species of sea urchin in the family Echinometridae. It occurs in shallow waters in the Indo-Pacific region. The type locality is Mauritius. Description ''Echinometra mathaei'' grows to a test diameter of about . The colour is quite variable but the test is usually a dark colour. The spines are sometimes green and purple with purple tips or entirely green with purple tips but this sea urchin can be distinguished from other species by a characteristic pale ring at the base of each spine. Echinometra mathaei (3 polymorphes).jpg, ''Echinometra mathaei'' in their holes in a rock. Reef4081 - Flickr - NOAA Photo Library.jpg Echinometra_mathaei_Reunion.JPG, ''idem''. Echinometra mathaei MHNT Both sides.jpg, The two sides of the same dried specimen ( MHNT) Distribution ''Echinometra mathaei'' is found on reefs in tropical parts of the Indo-Pacific Ocean at depths down to . Its range extends from Madagascar, the East African c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Lucunter
''Echinometra lucunter'', the rock boring urchin, is a species of sea urchin in the family Echinometridae. It is found in very shallow parts of the western Atlantic Ocean and the Caribbean Sea. Description ''Echinometra lucunter'' has an elliptical rather than a round test (shell). It can grow to a diameter of about and grows larger at the extreme north and south ends of its range than it does in the centre. It has moderately short spines with wide bases and sharp tips. The colour of the test varies from black to deep brownish-red, often being more ruddy on its aboral (upper) surface than on its oral (lower) surface. The spines are usually black. Distribution and habitat ''Echinometra lucunter'' is common throughout the Caribbean Sea and also occurs in Florida, Bermuda and the South American coast as far south as Brazil. It occurs on shallow rocky areas and on coral reefs usually at depths of or less but occasionally in deeper water down to about . It is sometimes found am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Vanbrunti
''Echinometra'' is a genus of sea urchins in the Family (biology), family Echinometridae. Species The following species are listed in the World Echinoidea Database: References {{Taxonbar, from=Q3046974 Echinometridae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Insularis
''Echinometra'' is a genus of sea urchins in the family Echinometridae. Species The following species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ... are listed in the World Echinoidea Database: References {{Taxonbar, from=Q3046974 Echinometridae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Viridis (Reef Urchin)
''Echinometra viridis'', the reef urchin, is a species of sea urchin in the family Echinometridae. It is found on reefs in very shallow parts of the western Atlantic Ocean and the Caribbean Sea. Description The reef urchin has an elliptical reddish brown test (shell) covered with medium length spines. These are greenish in colour with paler bases and darker, often violet, tips. This urchin grows to a diameter of with the longest spines being . It looks very similar to the rock-boring urchin ''Echinometra lucunter'', but the dark tips and the greater length of the spines are distinctive. Distribution The reef urchin is found on reefs in the Caribbean Sea from southern Florida to Venezuela at depths down to about . 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. Biology The reef urchin conceals itself in crevices or under boulders. It emerges at night to feed by grazing on algae with its five teet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Viridis
''Echinometra viridis'', the reef urchin, is a species of sea urchin in the Family (biology), family Echinometridae. It is found on reefs in very shallow parts of the western Atlantic Ocean and the Caribbean Sea. Description The reef urchin has an elliptical reddish brown Test (biology), test (shell) covered with medium length spines. These are greenish in colour with paler bases and darker, often violet, tips. This urchin grows to a diameter of with the longest spines being . It looks very similar to the rock-boring urchin ''Echinometra lucunter'', but the dark tips and the greater length of the spines are distinctive. Distribution The reef urchin is found on reefs in the Caribbean Sea from southern Florida to Venezuela at depths down to about . 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. Biology The reef urchin conceals itself in crevices or under boulders. It emerges at night to feed by gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Oblonga
''Echinometra oblonga'', also called the oblong urchin or 'ina 'ele 'ele (ina= generic name for urchin, 'ele 'ele= blackish) in Hawaiian, is a very common rock boring urchin on shallow rocky shores of the tropical Indo-Pacific and Southern Africa. Description ''Echinometra oblonga'' shows a range of color from dark purple to black. Their spines are shorter, and more blunt than other species of ''Echinometra ''Echinometra'' is a genus of sea urchins in the family Echinometridae. Species The following species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A s ...''. Reproduction ''Echinometra oblonga,'' are gonochoric. They fertilize externally. Their eggs are either held on the peristome or around the periproct. Habitat ''Echinometra oblonga'' generally live in rougher-water areas of tropical reefs. To protect themselves from the force of the waves, they live in the holes of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometridae
The Echinometridae are a family of sea urchins in the class Echinoidea. Characteristics All Echinometridae have imperforate tubercles and compound ambulacral plates. The Natural History Museum. Retrieved 2011-08-27. Genera *'' Anthocidaris'' A. Agassiz, 1863 *'' Caenocentrotus'' H.L. Clark, 1912 *'' Colobocentrotus'' Brandt, 1835 *'' |
Seaurchin
Sea urchins () are spiny, globular echinoderms in the class Echinoidea. About 950 species of sea urchin live on the seabed of every ocean and inhabit every depth zone from the intertidal seashore down to . The spherical, hard shells (tests) of sea urchins are round and spiny, ranging in diameter from . Sea urchins move slowly, crawling with tube feet, and also propel themselves with their spines. Although algae are the primary diet, sea urchins also eat slow-moving (sessile) animals. Predators that eat sea urchins include a wide variety of fish, starfish, crabs, marine mammals. Sea urchins are also used as food especially in Japan. Adult sea urchins have fivefold symmetry, but their pluteus larvae feature bilateral (mirror) symmetry, indicating that the sea urchin belongs to the Bilateria group of animal phyla, which also comprises the chordates and the arthropods, the annelids and the molluscs, and are found in every ocean and in every climate, from the tropics to the pola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Urchins
Sea urchins () are spiny, globular echinoderms in the class Echinoidea. About 950 species of sea urchin live on the seabed of every ocean and inhabit every depth zone from the intertidal seashore down to . The spherical, hard shells (tests) of sea urchins are round and spiny, ranging in diameter from . Sea urchins move slowly, crawling with tube feet, and also propel themselves with their spines. Although algae are the primary diet, sea urchins also eat slow-moving (sessile) animals. Predators that eat sea urchins include a wide variety of fish, starfish, crabs, marine mammals. Sea urchins are also used as food especially in Japan. Adult sea urchins have fivefold symmetry, but their pluteus larvae feature bilateral (mirror) symmetry, indicating that the sea urchin belongs to the Bilateria group of animal phyla, which also comprises the chordates and the arthropods, the annelids and the molluscs, and are found in every ocean and in every climate, from the tropics to the polar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinoidea
Sea urchins () are spiny, globular echinoderms in the class Echinoidea. About 950 species of sea urchin live on the seabed of every ocean and inhabit every depth zone from the intertidal seashore down to . The spherical, hard shells (tests) of sea urchins are round and spiny, ranging in diameter from . Sea urchins move slowly, crawling with tube feet, and also propel themselves with their spines. Although algae are the primary diet, sea urchins also eat slow-moving (sessile) animals. Predators that eat sea urchins include a wide variety of fish, starfish, crabs, marine mammals. Sea urchins are also used as food especially in Japan. Adult sea urchins have fivefold symmetry, but their pluteus larvae feature bilateral (mirror) symmetry, indicating that the sea urchin belongs to the Bilateria group of animal phyla, which also comprises the chordates and the arthropods, the annelids and the molluscs, and are found in every ocean and in every climate, from the tropics to the polar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camarodonta
The Camarodonta are an order of globular sea urchins in the class Echinoidea. The fossil record shows that camarodonts have been in existence since the Lower Cretaceous.The Echinoid Directory The Natural History Museum. Retrieved 2011-08-27. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates with the lowest elements enlarged. The pores are at regular intervals along the ambulacral plates from the apex to the mouth opening or peristome. The Aristotle's lantern, or jaw system, has keeled teeth with the supports meeting above the "foramen magnum".Families According to |
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