A clam is any of a number of edible[?] marine bivalve mollusks living in sand or mud[?] on the shores of oceans.
Also see mussel.
... is 3.19 and the average family size is 3.47. In the town the population is spread out with 28.2% under the age of 18, 7.5% from 18 to 24, 33.5% from 25 to 44, 23.9% from 45 ...