Breadcrumb Sponge

Breadcrumb Sponge - Halichondria panicea

At low tide the breadcrumb sponge can be found on the beach at Lundin Links and Lower Largo forming a thin layer on some of the rocks under overhangs. It looks nothing like a bathroom sponge. It is covered in crater-like structures called oscula. It looks as if it would be very slimy but feels quite firm and dry to the touch.