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The variation ("polymorphism", in this case, a "color morph") most commonly found is pure blue, dark blue, or light blue, although observers find the aqua, purple, or orange variation throughout the ocean. These sea stars may grow up to 30 cm (11.8 in) in diameter, with rounded tips at each of the arms; some individuals may bear lighter or ...
Rheasilvia / ˌ r iː ə ˈ s ɪ l v i ə / is the largest impact crater on the asteroid Vesta. It is 505 km (314 mi) in diameter, which is 90% the diameter of Vesta itself, and is 95% the mean diameter of Vesta, 529 km (329 mi).
The most prominent of these surface features are two enormous impact basins, the 500-kilometre (311 mi)-wide Rheasilvia, centered near the south pole; and the 400 km (249 mi) wide Veneneia. The Rheasilvia impact basin is younger and overlies the Veneneia. [75] The Dawn science team named the younger, more prominent crater Rheasilvia, after the ...
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 ...
This image or media file may be available on the Wikimedia Commons as File:Rheasilvia and older basin, Vesta.jpg, where categories and captions may be viewed. While the license of this file may be compliant with the Wikimedia Commons, an editor has requested that the local copy be kept too.
Goniasteridae are usually middle-sized sea stars with a characteristic double range of marginal plates bordering the disk and arms. Most of them have five arms, often short and triangular, around a broad central disc; many species are pentagonal or subpentagonal, covered densely with granular, seed-like protuberances, hence the name of the ...
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.
Common names include fragile star, Pacific comet sea star and variable sea star. Description. Linckia columbiae can grow to 10 cm (4 in) across and varies greatly in ...