There is a patch of these sponges at Chek Jawa, growing among coral
rubble. The base of the sponges are usually covered with tiny
red sea cucumbers and sometimes sponge
synaptid sea cucumbers as well.
Features: Sponge is horn-shaped and smooth. There does
not seem to be a hole at the tip and no bits sticking out at the sides.
Clumps of many horns may be spread over 30-40cm. Each conical, horn-shaped
portion about 5cm tall and 3cm wide at the base. Colours beige to
*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience
horn sponges on Singapore shores