North Carolina is trying to stop seismic testing related to oil and gas development in federal waters off its coast by objecting to pending permits.

The state Division of Coastal Management says a seismic survey planned by WesternGeco, a subsidiary of Schlumberger Ltd., is inconsistent with North Carolina’s coastal management policies.

The testing, which involves the firing of loud acoustic signals, has significant negative impacts on marine life, commercial and recreational fisheries, and the coastal economy,...