The dusky shark is currently listed as Vulnerable by the IUCN, but populations continue to decline. The dusky shark is one of the slowest-growing, latest-maturing sharks, bearing small litters after a glong gestation period. These...
Structural or operational changes to fishing vessels that would decrease the intensity or signature of their sound output, potentially decreasing the degree to which they attract animals that presumably associate these vessels with a feeding opportunity. At least one study in the Pacific indicated that the noise from longline haulers attracted false killer whales from long distances (J. Watson, pers. comm.).