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Some species of other reef inhabitants prey on this species of sea star. Various pufferfishes, Charonia species (triton shells), harlequin shrimp, and even some sea anemones have been observed to eat whole or parts of the sea stars. [3] The Blue Linckia is also prone to parasitization by a species of the parasitic gastropod Thyca crystallina.
This group includes the cushion stars, [113] the leather star [114] and the sea daisies. [115] Velatida (4 families, 16 genera, 138 species) [116] This order of starfish consists mostly of deep-sea and other cold-water starfish often with a global distribution. The shape is pentagonal or star-shaped with five to fifteen arms.
In a study comparing seastar righting behavior the Henricia leviuscula twisted arms 1 and 3 toward each other, used arms 4 and 5 to support itself on the bottom of the tank, and moved arm 2 up so it was in a sitting-like position, and began to flip itself over.
The animal remains stationary while the ray, using its tube feet for purchase, pulls and twists itself away from the disc until the tissue connecting the two breaks. The separated ray is known as a "comet" and a new disc and a number of new rays start to grow on the damaged surface, a process that takes about six months to complete.
It is sometimes known as the blue seastar or tan starfish, but both these names are also used for other species (e.g., blue seastar for Linckia laevigata). It is native to the eastern Pacific Ocean where it ranges from the Gulf of California and Magdalena Bay (Mexico) to northwest Peru , including various eastern Pacific island groups such as ...
M. aequalis is both an omnivore and a predator and will scavenge for dead animals and detritus. As well as feeding on algae, it preys on tunicates (such as sea pork), sea pens, sponges, bryozoans, brachiopods and polychaete worms. In its turn it is hunted by the larger morning sun star. It can move at the rate of 40 cm (16 in) per minute, which ...
Their method of feeding is unique among sea stars. Rather than grasp their prey from below with their tube feet , they capture prey on their top surface using pedicellariae . These parrot-beak-like appendages are set into cushions surrounded the larger multi-colored spines on the animals' top.
Patiria miniata, the bat star, sea bat, webbed star, or broad-disk star, is a species of sea star (also called a starfish) in the family Asterinidae. It typically has five arms, with the center disk of the animal being much wider than the stubby arms are in length. [2] Although the bat star usually has five arms, it sometimes has as many as ...