Tags » Invertebrates
Bivalves are so named for their two hard shell valves made of carbonate, linked by a soft ligament acting as a hinge. They use a strong adductor muscle to close their shell, and the relaxation of the muscle allows the springy ligament to reopen (you might be familiar with adductor muscles as the edible tasty part of a scallop). 838 more words
An engineering genius.
Its web making family more than 40,000 species of engineer designers.
Astonishing silk makers,