West Indian Sea Egg

Description:

These urchins are dark in colour, usually black, dark purple, or reddish brown, with white spines 1 to 2 cm long. They can reach 10 to 15 centimetres (3.9 to 5.9 in) in size. They are often covered with seagrass and debris similar to the closely related Tripneustes gratilla.

Habitat:

They are common in the Caribbean, Bahamas, and Florida, and may be found at depths of 0 to 10 metres (0 to 33 ft).

Notes:

saw maybe 40ft down wile diving bonaire, it looks just like a ball covered in spikes.