they are called rays
radial symmetry
A starfish has radial symmetry
ctenophorains(jellysfish) are spherical in shape much like a ball hence show radial symmetry. echinoderms(starfish) generally are flatter and have 5 arms hence are called pentaradial symmetry (can be cut in only 5 directions)
Most Echinoderms have radial symmetry. Sea Urchins, Starfish, Sand Dollars, etc.
starfish,
Starfish
Yes, they do.
A radial body plan. Starfish and jellies are example of organisms with a radial morphology.
Box starfish has pentaradial symmetry.
Starfish tend to have pentamerous radial symmetry. In other words, the typical starfish has five lines of symmetry throughout their body. Some species have more lines because they have more arms.
Starfish belong to the species of phylum Echinodermata. Starfish are found in the oceans around the world with a large population in the Pacific and Indian oceans.
The possessive form is the 'starfish's arms'.