| Clypeaster humilis | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Order: | Clypeasteroida |
| Family: | Clypeasteridae |
| Genus: | Clypeaster |
| Species: | C. humilis |
| Binomial name | |
| Clypeaster humilis | |
| Synonyms [1] | |
| |
Clypeaster humilis is a species of sea urchin in the family Clypeasteridae. This species was first scientifically described in 1778 by the German biologist Nathanael Gottfried Leske. [1] It occurs in the tropical Indo-Pacific region.
Clypeaster humilis is a medium-sized species of sea biscuit, growing to a maximum length of 160 mm (6 in). Its shape is pentagonal and it is slightly longer than it is broad. The margin is quite thick and the petaloid area is raised above the rest of the surface. The individual petals are closed and the petaloid area occupies less than half the width of the test. The oral (under) surface is somewhat concave and the food grooves are long and deeply incised. The spines are short, with the primaries hardly exceeding the length of the secondaries. When living, this sea biscuit is greenish-grey or brownish, the petaloid area sometimes being darker brown; the bare test is yellowish or beige. [2]
This species is found in the western Indo-Pacific region, its range extending from the Red Sea and Persian Gulf to Malaysia, New Caledonia and northern Australia. It is found on sandy seabeds at depths down to about 216 m (709 ft). [2]
Sand dollars are species of flat, burrowing sea urchins belonging to the order Clypeasteroida. Some species within the order, not quite as flat, are known as sea biscuits. Sand dollars can also be called "sand cakes" or "cake urchins".
The Indo-Pacific is a vast biogeographic region of Earth.
The Indo-Pacific bottlenose dolphin is a species of bottlenose dolphin. This dolphin grows to 2.6 m (8.5 ft) long, and weighs up to 230 kg (510 lb). It lives in the waters around India, northern Australia, South China, the Red Sea, and the eastern coast of Africa. Its back is dark grey and its belly is lighter grey or nearly white with grey spots.
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. The species can be found throughout the Indo-Pacific region, from Australia and Africa to Japan and the Red Sea. Despite being capable of causing painful stings when stepped upon, the urchin is only slightly venomous and does not pose a serious threat to humans.
Arachnoides is a genus of sea urchin within the family Clypeasteridae, found in the Indo-Pacific oceans. The base is flat and the upper surface is convex.
Astropyga radiata, the red urchin, fire urchin, false fire urchin or blue-spotted urchin, is a species of sea urchin in the family Diadematidae. It is a large species with long spines and is found in the tropical Indo-Pacific region. It was first described in 1778 by the German naturalist Nathaniel Gottfried Leske.
Callistoctopus macropus, also known as the Atlantic white-spotted octopus, white-spotted octopus, grass octopus or grass scuttle, is a species of octopus found in shallow areas of the Mediterranean Sea, the warmer parts of the eastern and western Atlantic Ocean, the Caribbean Sea, and the Indo-Pacific region. This octopus feeds on small organisms which lurk among the branches of corals.
Clypeaster, common name "cake urchins" or "sea biscuits", is a genus of echinoderms belonging to the family Clypeasteridae.
Brissus unicolor is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissus unicolor was first scientifically described in 1778 by Nathanael Gottfried Leske.
Epinephelus latifasciatus, the striped grouper, banded grouper or spotfin rockcod, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. It is found in the Indo-Pacific region.
Clypeaster reticulatus, the reticulated sea biscuit, is a species of sea urchin in the family Clypeasteridae. This species was first scientifically described in 1758 by Carl Linnaeus. It lives on the sandy seabed of shallow seas, semi-immersed in the sediment.
Clypeasteridae is a family of sea urchins in the order Clypeasteroida. This family was first scientifically described in 1835 by the Swiss-American biologist Louis Agassiz.
Clypeaster rosaceus, the fat sea biscuit, is a species of sea urchin in the family Clypeasteridae. It occurs in shallow water in the western Atlantic Ocean and was first scientifically described in 1758 by Carl Linnaeus.
Clypeaster japonicus, the Japanese sea biscuit, is a species of sea urchin in the family Clypeasteridae. This species was first scientifically described in 1885 by the German zoologist Ludwig Heinrich Philipp Döderlein.
Clypeaster subdepressus is a species of sea urchin in the family Clypeasteridae. This species was first scientifically described in 1825 by the British zoologist John Edward Gray. It is a very large and flattened sea biscuit, native to the east coasts of North, Central and South America.
Leodia sexiesperforata, commonly known as the six-holed keyhole urchin, is a species of sand dollar, in the echinoderm order Clypeasteroida. It is native to tropical and sub-tropical parts of the western Atlantic Ocean where it buries itself in soft sediment in shallow seas.
Pseudochrominae is a subfamily of ray-finned fishes, one of four subfamilies that make up the family Pseudochromidae, the species within the subfamily are commonly called dottybacks. They are small reef-associated marine fish which have an Indo-Pacific distribution.
Holothuria hilla is a species of sea cucumber in the subgenus Mertensiothuria of the genus Holothuria. Some common names include the contractile sea cucumber, the sand sifting sea cucumber and the tigertail sea cucumber, and in Hawaii it is known as the light spotted sea cucumber. It is found in the Indo-Pacific region and the Red Sea.
Encope emarginata, a notched sand dollar, is a marine echinoid ranging the western Atlantic ocean. They are best known for their bioturbation in the sediment, relationship with crabs, and their widespread distribution.
Echinodiscus bisperforatus is a species of sand dollar described by Nathanael Gottfried Leske in 1778. The species is found throughout the Indo-Pacific in the Red Sea and off the coasts of south and east South Africa, Thailand, Malayan Archipelago, and New Caledonia at depths up to 20 meters. It grows to lengths of 11.8 centimeters.