Study: Starfish may just be heads "crawling along the seafloor"
Starfish are echinoderms, a form of invertebrate marine animals known for radial symmetry and having spiny skin.
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Starfish are echinoderms, a form of invertebrate marine animals known for radial symmetry and having spiny skin.
"One could think of the body of a starfish ... as a disembodied head walking about the sea floor on its lips," researchers said.
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Genetic sequencing reveals that the starfish lost its torso during evolution, and they are heads that crawl on the seafloor. Read more here.