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Sea urchin gonads are highly prized in some Asian and European seafood markets where demand has been increasing. [5] In the New Zealand market, the roe can reach NZ$70 per kg. [18] However, because E. chloroticus is not well known in Japan and has a reputation for having a bitter taste, this sea urchin is unable to reach a high price in export ...
Sterechinus neumayeri, the Antarctic sea urchin, is a species of sea urchin in the family Echinidae. It is found living on the seabed in the waters around Antarctica. It has been used as a model organism in the fields of reproductive biology, embryology, ecology, physiology and toxicology. [2]
Sea urchins move by walking, using their many flexible tube feet in a way similar to that of starfish; regular sea urchins do not have any favourite walking direction. [13] The tube feet protrude through pairs of pores in the test, and are operated by a water vascular system ; this works through hydraulic pressure , allowing the sea urchin to ...
Radiols (spikes) of a "slate pencil sea urchin". They are a classical souvenir. This species is a large sea urchin, crapping in some specimens reaching over 8 cm in diameter, with spikes up to 10 cm. Most specimens are bright red, but brown and purple colorations are also seen. [3] The spines may have a different color from the body.
Crowned sea urchins are nocturnal, foraging within a few meters of their shelters, to which they return at dawn. [4] [7] They are mostly carnivorous, feeding on sponges, tunicates, bryozoans, and algae. [8] Crowned sea urchins are gonochoric, which is to say that there are two sexes, and each individual is either male or female. Spawning takes ...
Tripneustes ventricosus, commonly called the West Indian sea egg or white sea urchin, is a species of sea urchin. It is common in the Caribbean Sea , the Bahamas and Florida and may be found at depths of less than 10 metres (33 ft).
The water vascular system is a series of canals through which fluid moves to help propel the podia of the sea urchin. The fluid that fills the water vascular system is similar to marine water, but also has free wandering cells and organic compounds such as proteins and a high concentration of potassium ions when compared to the surrounding sea ...
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.