Urchin ID

[steveb]

These were given to me and I absolutely love their ravenous appetite for algae. They came with rock from Tampa Bay Saltwater.

Would like to get an id so I can purchase a few more.

 

[Malifry97]

Looks like a long spine urchin

 

[mtfish]

Long spined urchin.

 

[Lovemyreef2015]

Diadema antillarum (black long spine urchin).

 

[steveb]

I thought about diadema but I’m not sure. I have one that is larger. It has a mix of short and very long spines.

On these guys the spines are all approx 1/2” to 1”. Although I suppose it could be a juvenile.

 

[Lovemyreef2015]

I thought about diadema but I’m not sure. I have one that is larger. It has a mix of short and very long spines.

On these guys the spines are all approx 1/2” to 1”. Although I suppose it could be a juvenile.

That species is a common hitchhiker on tampa bay live rock that's why I mentioned it.

 

[LobsterOfJustice]

Rock urchin, rock boring urchin, short spine urchin, etc.

Black Rock Urchin

The black rock urchin, Arbacia sp, is a rather uncommon urchin for the Atlantic side of the Keys, but it seems to be having an unusually good year there. I haven’t been able to find an accurate description and picture of his urchin, and when I have found a picture, the scientific name is wrong, […]

www.kpaquatics.com

 

[mtfish]

Rock urchin, rock boring urchin, short spine urchin, etc.

Black Rock Urchin

The black rock urchin, Arbacia sp, is a rather uncommon urchin for the Atlantic side of the Keys, but it seems to be having an unusually good year there. I haven’t been able to find an accurate description and picture of his urchin, and when I have found a picture, the scientific name is wrong, […]

www.kpaquatics.com

After looking at the picture again, I think this is the correct ID.