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The background colour is variable and may be brownish or greenish-grey, tinged with yellow or red and sometimes with purple at the tips of the arms. This species can grow to 70 cm (28 in) but a more usual size is 25 to 30 cm (10 to 12 in). It is sometimes confused with the northern starfish Leptasterias muelleri. [3]
The common starfish, common sea star or sugar starfish (Asterias rubens) is the most common and familiar starfish in the north-east Atlantic. Belonging to the family Asteriidae , it has five arms and usually grows to between 10–30 cm across, although larger specimens (up to 52 cm across) are known.
These starfish have between 6 and 16 long, ... They are 40 times the size of disk radius and have 7–20 flexible spiny arms. [5] Distribution
The Brisingidae are a family of starfish found only in the deep sea. [2] They inhabit both the Atlantic and Pacific Oceans at abyssal depths, and also occur in the Southern Ocean and around Antarctica at slightly shallower depths.
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (/ ˌ æ s t ə ˈ r ɔɪ d i ə /). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as asteroids due to being in the class
Archaster typicus is a five-limbed star with long, slightly tapering arms with pointed tips. Occasionally three, four, or even six-armed individuals occur. Adults grow to 12 to 15 centimetres (4.7 to 5.9 in) in diameter, with males often being smaller than females.
This type of sea star grows five arms and can reach up to 80.0 millimetres (3.15 in) in length, though most stay around 50 millimetres (2.0 in). The size is found to vary with depth, larger sea stars are found deeper while smaller ones are usually found in shallow waters.
Luidia clathrata is a large, flattish starfish, sometimes growing to a diameter of 30 cm (12 in). It has a relatively small disc and five slender arms, which are two or three times the diameter of the disc.