Do the current conditions in the Gulf of Maine support the growth and survival of the soft shell clams

Given that the ligament holding valves together readily decays, how do you expect to find intact bivalves in the fossil record? What do you expect their valve orientation with the substrate to look like? How might this affect morphometric studies-- i.e. is it always possible to take measurements in three dimensions?

In order to flip themselves upright, horseshoe crabs use their: Chelipids Telson Gnathobases Spatula Uropods

What causes the loss of spines in lake stickleback fish?

Distinguish each of the following from each other: fringing reefs; barrier reefs; atolls; patch or bank reefs

What is the symmetry of this organism? Also, What is the lifestyle of the organism (turtle) in the previous photo? (Select all that apply)     Pelagic, planktonic     Benthic, infaunal     Vagrant     Pelagic, nektonic     Benthic, epifaunal     Sessile