As offshore wind survey work enters what appears to be its final months off the coast of New Jersey, proponents and opponents are amping up their positions on whether it has played a role in the unprecedented number of marine mammal deaths so far this year.

“Like residents across the state, we are alarmed by the number of dead whales, dolphins and marine life washing ashore or being found in the water,” 9th District legislators said during an online hearing held by New Jersey’s Republican state…