18 Facts About Starfish

Starfish are known as asteroids due to being in the class Asteroidea.

Starfish have tube feet operated by a hydraulic system and a mouth at the centre of the oral or lower surface.

Starfish have no distinct excretory organs; waste ammonia is removed by diffusion through the tube feet and papulae.

Starfish do not appear to have any mechanisms for osmoregulation, and keep their body fluids at the same salt concentration as the surrounding water.

Starfish produce a large number of secondary metabolites in the form of lipids, including steroidal derivatives of cholesterol, and fatty acid amides of sphingosine.

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Starfish are infrequently found as fossils, possibly because their hard skeletal components separate as the animal decays.

Starfish are included in the subphylum Asterozoa, the characteristics of which include a flattened, star-shaped body as adults consisting of a central disc and multiple radiating arms.

Starfish are deuterostomes, closely related, together with all other echinoderms, to chordates, and are used in reproductive and developmental studies.

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, and they develop rapidly.

Starfish have an unusual ability to expel foreign objects from their bodies, which makes them difficult to tag for research tracking purposes.

Whale had one but refused to lend it, so Starfish kept him busy, telling him stories and grooming him to remove parasites, while the others stole the canoe.

Starfish is the title of novels by Peter Watts and Jennie Orbell, and in 2012, Alice Addison wrote a non-fiction book titled "Starfish - A year in the life of bereavement and depression".

The Starfish and the Spider is a 2006 business management book by Ori Brafman and Rod Beckstrom; its title alludes to the ability of the starfish to regenerate itself because of its decentralized nervous system, and the book suggests ways that a decentralized organisation may flourish.

Starfish are widespread in the oceans, but are only occasionally used as food.

Starfish are sometimes eaten in China, Japan and in Micronesia.

Starfish are in some cases taken from their habitat and sold to tourists as souvenirs, ornaments, curios or for display in aquariums.

Starfish has repeatedly been chosen as a name in military history.

Starfish Prime was a high-altitude nuclear test conducted by the United States on 9 July 1962.