Biscuit Sea Star
About the Biscuit Sea Star in Singapore
Last updated 31 May 2026
Brown, flat, and perfectly star-shaped, the Biscuit Sea Star (Goniodiscaster scaber) looks as though it was cut with a cookie cutter, giving it its name.
The mouth of a sea star is located on the underside of its body. Biscuit Sea Stars consume encrusting animals such as algae and sponges, as well as decaying organic matter. Like sea cucumbers, sea stars possess many tiny tube feet that allow them to move around.
Identifying features
Check out some of the identifying features of Biscuit Sea Stars below.
Biscuit Sea Stars are usually brown on top with regular spots and bars in darker brown, orange, yellow or white. The tips of their arms are rounded. Their undersides are pale, and bluish along the grooves where their orange tube feet emerge.
Habitat and ecology
Biscuit Sea Stars are found on seaweed and seagrass beds, and on sandy shores.
Did you know?
Sea stars exhibit a 5-point radial symmetry, which means if you sectioned a star star by drawing 5 lines radiating from the centre of its body, each section would look exactly the same. This interesting phenomenon is only found in the marine environment.
Learn more about the Biscuit Sea Star!
Curious about the Biscuit Sea Star? Here are some interesting articles you can read to learn more about them.
