A broken Star
No, it’s not Laura’s star. Nor a starlight-star-bright sort of thing. Maybe more towards sea star, sea scar. It’s a scar of the sea, to have quite a number of dead sea stars washed on shore this morning at Pasir Panjang beach, Bintan. And they have been dead for quite a time, since what is left is the internal skeleton, made up of tiny ossicles (plates made mostly of calcium carbonate). But not long enough to degrade it.
Cause of death is unknown. But there are quit a number of abiotic factors that can affect its life, including but not limited to oxygen concentration and wave force.
Here’s a good article on Factors affecting the abundance and size of Pisaster ocharceus in the rocky intertidal zone of southern British Columbia for you techie guys.