urchin ID

[LoyalConvict]

Ok i've had him for 2-3 years came as a hitchhiker from some tonga live rock, idont know if its a rock burrowing urchin a purple spined or what it is...pic and sorry was takin at night with flash, he never comes out during the day.

 

[VacavilleFC3S]

viridis, rock boring urchin

 

[Airwolf75]

echinometra mathaei, a common pacific rock boring sea urchin