I found this critter when I observed something moving subsurface during a dive last week in the Persian Gulf.
I prised it out from the sand and this is what I found

Within a few minutes it started to dig in and bury itself

I believe it's some type of Heart Urchin, possibly Metalia spatagus.
Has anyone come across these before?
en.wikipedia.org
I prised it out from the sand and this is what I found

Within a few minutes it started to dig in and bury itself

I believe it's some type of Heart Urchin, possibly Metalia spatagus.
Has anyone come across these before?
