they are starfish that is spiny
The scientific name of a spiny starfish is "Marthasterias glacialis."
there are cusion starfish, reef starfish, spiny starfish and fire brick starfish in new zealand.
sea crawlers
Starfish
Starfish (Sea stars) are echinoderms, a type of spiny animal.
echinoderms which means (spiny skin)
The Spiny skin sea-animals also known as Echinoderms consist of about 6000 species. They are commonly grouped together as starfish and sea urchins.
Because echinoderm means "spiny skin."
Starfish are cnidarians. They have spiny skin, some have nematocysts (stinging cells) and are generally toxic.
There are many starfish that are poisonous, such as the Crown of Thorns starfish, the sun star starfish, the spiny sun star starfish and the leather star starfish. Starfish have sharp spikes that are covered with a thin, venomous skin, which can cause swelling, nausea and vomiting once it is on your skin.
a starfish. durhh
we put it in the sea water so that they can breathe