Medium standard Base Rock Island color:brown It appears as a fuzzy

It appears as a fuzzy patch of tubular fingers

You can also drill into the rock without it crumbling

This is our six tube sponge measuring 6x4x5

Pictured is the standard two tone yellow/green

5 x 5 inches

Medium standard Base Rock Island color:brown It appears as a fuzzyThis base island measures 9"x7"x3. 5" high. It features coralline algae look with a grayish rock color. There are multiple holes drilled in this base for easy insertion of plug on corals. All of our corals come pre drilled with a plastic threaded peg for plugging onto the bases. You can use a 3 8" drill bit to drill as many more holes in the rock base as you would like! Enjoy!!