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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 ...
Brittle stars, serpent stars, or ophiuroids (from Latin ophiurus 'brittle star'; from Ancient Greek ὄφις (óphis) 'serpent' and οὐρά (ourá) 'tail'; referring to the serpent-like arms of the brittle star) are echinoderms in the class Ophiuroidea, closely related to starfish. They crawl across the sea floor using their flexible arms ...
L. ciliaris is an orangeish-brown colour and has seven long arms radiating from a small disk. It is a large but fragile sea star, growing to 40 cm (16 in) across, and easily losing its arms (which afterwards regenerate). The arms have parallel sides and taper only near the tip. They have a conspicuous fringe of white spines along the margins.
Together, the data created a 3D map to determine where genes were expressed as sea stars developed and grew. The team was able to determine the genes that control the development of the starfish ...
The upper surface of the disc and arms is clad in longitudinal rows of calcified plates called ossicles, and in paxillae, pillar-like spines with flattened summits covered with minute spinules. No plates are found along the margins of the arms, these being replaced by paxillae, but on the underside, the marginal plates are large and themselves ...
The starfish have a flat, star-shaped body with five elongated triangular arms, according to experts. The creatures are covered with “dense” granules forming a “smooth, almost featureless ...
Luidia maculata is a species of starfish in the family Luidiidae in the order Paxillosida.It is native to the Indo-Pacific region. [2] It is commonly known as the eight-armed sea star because, although the number of arms varies from five to nine, eight arms seems to be the most common.
It grows to a diameter of about 30 to 40 centimetres (12 to 16 in). The aboral or upper surface has a patchwork of closely packed spiny plates. The square ones near the edge of the arms are cream coloured and the irregular ones in a band running down the middle of the arms are grey. The margins of the arms are fringed with short white spines.