Double Spined Urchin (Echinothrix calamaris)
Some pets have actually created a kind of shield called spinal column – which is a tough, thorny or needle-like framework which grow as a self-defense mechanism.
The double spined urchin or banded sea urchin, is an urchin, with an examination (covering) diameter of concerning 5 cm. It has two collections of spines, much shorter shut spines which are dark in shade and also can supply a nasty sting, and also much longer open finished backs that are typically banded. The round in the middle of a sea urchin is its anus.