Echinodermata
The Echinodermata phylum contains species such as starfish, sea cucumbers, and sand dollars. Each of these species live in salt water, and can be spotted by their radial symmetry. There are roughly 70,000 species of Echinoderms known to man. Echinoderms are known for their ability to regrow limbs if need be. The Echinoderm's nervous system is very simple, since the animals do not posses a brain. The only nervous system part the animals have is nerve cords running down each limb and eyespots at the end that sense light or dark.
The Echinodermata phylum contains species such as starfish, sea cucumbers, and sand dollars. Each of these species live in salt water, and can be spotted by their radial symmetry. There are roughly 70,000 species of Echinoderms known to man. Echinoderms are known for their ability to regrow limbs if need be. The Echinoderm's nervous system is very simple, since the animals do not posses a brain. The only nervous system part the animals have is nerve cords running down each limb and eyespots at the end that sense light or dark.