266 kg
No. Sea urchins live in the sea.
More sea urchins.
There are actually four major classes of echinoderms. These are Crinoidea, Asteroidea, Ophiuroidea, Eichionidea, Holothuroidea, and Concentricyloidea. The animals in these range from sea lilies to sea urchins.
The classification of a Sea Urchin is Echinoidea
there are excatly 3million purple sea urchins
sea urchins eat kelp.
Depending on the species, sea urchins range in size from a few inches across (small rock-boring urchins) to a foot or more across (pencil urchins and venomous hollow-spined urchins). THATS NOT HELPFUL!!
Echinoderms.
The spiky spines of purple sea urchins range in colours depending on the exact species and the maturity of the urchin. They can range from light blue, dark blue, royal blue, indigo, light purple, violet and dark purple.
No. Sea urchins are primary consumers and only eat sea weed, algae and kelp.
in the sea
Yes, sea urchins are herbivores because they mainly feed on algae.