Tag: Banded Sea Urchin (Echinothrix Calamaris)

The Banded Sea Urchin (Echinothrix Calamaris) is a common member of the class Echinoidae and is known by many different common names including Variable Urchin, Brown-Spined Urchin, Double-Spined Urchin, Hatpin Urchin to name but a few....

The Banded Sea Urchin has a "test" (the rounded body area) diameter of up to 10cm.

It is easily identified by its relatively short, blunt, white spines which usually have brown bands (although some individuals have been found with no markings on the spines).

Inside the larger banded spines are short, brown, needle-like spines which are capable of inflicting a nasty sting.

The Banded Sea Urchin (Echinothrix Calamaris) is a common member of the class Echinoidae and is known by many different common names including Variable Urchin, Brown-Spined Urchin, Double-Spined Urchin, Hatpin Urchin to name but a few....

The Banded Sea Urchin has a "test" (the rounded body area) diameter of up to 10cm.

It is easily identified by its relatively short, blunt, white spines which usually have brown bands (although some individuals have been found with no markings on the spines).

Inside the larger banded spines are short, brown, needle-like spines which are capable of inflicting a nasty sting.

Alan's picture
Banded Sea Urchin (Echinothrix Calamaris)

In this close-up of a Banded Sea Urchin (Echinothrix Calamaris), the main distinguishing features are all clearly visible.