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Boomer · 06-24-2008, 01:45 PM

First, it is not a Atlantic long spined urchin. There are not enough spines or long enough. It is a juv Echinometra sp.

Echinometra viridis
They graze on algae and rarely coralline algae.They are noted for producing many algae free reef patches.

Look to see if there are white rings at the base of the spines.

Echinometra viridis - Google Image Search

Echinometra lu****er
This is a burrowing/rock-bore urchin and feed mostly at night. They usually bore into a calcareous substance and make a burrow to live in during the day. They will remove any coralline algae around there burrow but that is mostly it. They like to eat "drifting" or settled algae. So, they world like to stay in or near their burrow at all times. They are not roamers but may be in a reef tank

They do not have the white ring.

Echinometra lu****er - Google Image Search

06-24-2008, 01:45 PM	#6 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,274 View Gallery Karma Komment	Re: wu dis First, it is not a Atlantic long spined urchin. There are not enough spines or long enough. It is a juv Echinometra sp. Echinometra viridis They graze on algae and rarely coralline algae.They are noted for producing many algae free reef patches. Look to see if there are white rings at the base of the spines. Echinometra viridis - Google Image Search Echinometra lu**er This is a burrowing/rock-bore urchin and feed mostly at night. They usually bore into a calcareous substance and make a burrow to live in during the day. They will remove any coralline algae around there burrow but that is mostly it. They like to eat "drifting" or settled algae. So, they world like to stay in or near their burrow at all times. They are not roamers but may be in a reef tank They do not have the white ring. Echinometra lu**er - Google Image Search __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More !** The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.