echinus esculentus การใช้

• Echinoderms such as the brittle star " Ophiothrix fragilis " are frequently seen with their arms protruding from rock cracks, whilst the starfish " Asterias rubens " and the sea urchins " Echinus esculentus " and " Psammechinus miliaris " occasionally form part of the community, as does the whelk " Buccinum undatum ".