Description

Also known as Marine Sponge, Organ-pipe Sponge, Pacific Sponge, Pipe Sponge, Siliceous Sponge, Thai Sponge, Tropical Marine Sponge.

Found on ledges and slopes, of coral and rocky reefs. The surface of this sponge is made up of tightly packed tiny tubercles.
They feed on plankton.
Length - ?cm
Depth - 10-20m
Widespread Indo-Pacific

Sponges come in a range of sizes from minuscule encrusting species under rocks to massive sponges which can be up to one and half metres high.
They are able to filter many litres of sea water every few seconds.
Sponges can exude highly toxic chemicals and so have very few predators apart from nudibranchs, sea stars, sea urchins and umbrella shell.
Their colour can vary if growing in the light or when growing in the shade. (edit) Ref: x