1) Echinoderm genus 2) Genus astrophyton 
The giant basket star, Astrophyton muricatum, is an echinoderm found throughout the Caribbean Sea and the Gulf of Mexico. It is the only species in the genus Astrophyton. During the day, it curls up into a tight ball shape to protect itself from predators. At night, it climbs to an elevated point to feed on plankton by extending its intricately br...
• (n.) A genus of ophiurans having the arms much branched.
As·troph'y·ton noun [ Astro- + Greek 
[n] - includes many of the basket stars
genus Astrophyton noun includes many of the basket stars