A star fish
a starfish. durhh
The sea urchin is an example of the tubed feet and belongs to the phylum Echinodermata.
yes it does
Sea stars breath through their skin gills and tubed feet to preform gas exchange.
100,000
tubed feet
Sea urchins!
helps them stick to things
their spiny skin
They have spiny skin and the name comes from Greek word 'echinoderm' which means 'spiny skin'
No, some are not spiny at all, like snakes.
Echinoderm means spiny skin in Latin.