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Mespilia globulus, the globular sea urchin, sphere sea urchin, or tuxedo urchin (trade name), is a sea urchin occurring in tropical shallow reef habitats. [1] The specific name refers to a small ball or spherule, describing its overall shape/morphology. [1] It is the only species in the genus Mespilia. [2]
Globe urchin, Tuxedo urchin: Mespilia globulus: Yes: Easy: Very common in the aquarium trade: 7.5 cm (3.0 in) Slate pencil urchin: Eucidaris tribuloides: Purple short spine pincushion urchin: Pseudoboletia maculata: Red slate pencil urchin: Heterocentrotus mamillatus: Reef urchin, Rock boring urchin: Echinometra sp. Variegated urchin ...
The red sea urchin (Mesocentrotus franciscanus) [1] is a sea urchin found in the northeastern Pacific Ocean from Alaska to Baja California. It lives in shallow waters from the low-tide line to greater than 280 m (920 ft) deep, [2] and is typically found on rocky shores sheltered from extreme wave action in areas where kelp is available. [3] [4]
The name urchin is an old word for hedgehog, which sea urchins resemble; they have archaically been called sea hedgehogs. [6] [7] The name is derived from the Old French herichun, from Latin ericius ('hedgehog'). [8] Like other echinoderms, sea urchin early larvae have bilateral symmetry, [9] but they develop five-fold symmetry as they mature ...
Echinus is a genus of sea urchins.Sea urchins are echinoderms that are typically spherical or flattened with a covering of spine-like structures. Sea urchins tend to be important members of their ecosystems by grazing on other organisms and stabilizing populations.
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.
Rep. Nancy Mace unveiled legislation Thursday aimed at protecting women and children from registered sex offenders in emergency shelters during the fallout from natural disasters.
Urchin Software Corporation, a US web analytics company owned by Google Urchin (software), a series of web analytics developed by the Urchin Software Corporation (now Google Analytics) "Urchin" was the code name for the modulated neutron initiator design used in the earliest American implosion atomic bombs