Search results
Results From The WOW.Com Content Network
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.
Thromidia catalai is a large starfish with five arms and a diameter of up to 70 cm (28 in), weighing up to 6 kg (13 lb). [2] The surface is covered with low tubercles, giving it a granular appearance. The arms are robust and cylindrical, not tapering much and having rounded tips.
Female starfish produce large numbers of oocytes that are easily isolated; these can be stored in a pre-meiosis phase and stimulated to complete division by the use of 1-methyladenine. [125] Starfish oocytes are well suited for this research as they are large and easy to handle, transparent, simple to maintain in sea water at room temperature ...
Choriaster granulatus is a large sea star with a convex body and five short arms. The arms have rounded tips, making it appear "phallic", leading to one of its common names being "the doughboy starfish". Relatively large in comparison with other sea stars, its maximum radius is about 27 centimetres (11 in).
Fecundity in female crown-of-thorns starfish is related to size, with large starfish committing proportionally more energy into ova production such that: [45] A 200-mm-diameter female produces 0.5–2.5 million eggs, representing 2–8% of her wet weight. A 300-mm-diameter female produces 6.5–14 million eggs, representing 9–14% of her wet ...
Creatures like jellyfish, starfish and sand dollars rely on the wind and current to move around. If an offshore storm or strong winds push these invertebrates too close to shore, they can get ...
Underside of a sunflower sea star. Sunflower sea stars can reach an arm span of 1 m (3.3 ft). They are the heaviest known sea star, weighing about 5 kg. [4] They are the second-biggest sea star in the world, second only to the little known deep water Midgardia xandaros, whose arm span is 134 cm (53 in) and whose body is 2.6 cm (roughly 1 inch) wide. [7]