Project Description

It was interesting observing this slime star (Pteraster tesselatus) with its large central opening expanding and then closing.  This sea star can expel large quantities of mucus if disturbed which can discourage predatory sea stars.  It has very thick and stubby rays with the tips slightly upturned.  The slime star can be yellow, orange, pale brown or grey, and often there are darker makings that create patterns as in this photo.  The slime star can grow to 9.4 inches (24 cm) across, with a range that includes Japan, as well as northern Alaska to central California.