Northern Movements
Dusky Shark (from Blueplanetarchive.com) A recent science paper noted Dusky Sharks feeding on Gray Seals off Cape Cod. The Dusky Shark, Carcharhinus obscurus , is a subtropical to temperate species that roams further north during the warm months; it is not known to enter the icy northern waters north of the Gulf of Maine. Expectably, they tend to be rare north of the New England coast. That was then; this is now. We have already entered a new world of warming. Dusky Sharks can grow to be quite large, reaching lengths of over 3 meters, or more than 10 feet. They are feeders on fish, lots of fish, and will, apparently, also go in for those nice succulent seals. Thisis not something they were thought to feed on much. However, those cheeseburgers dotting the coastline, hauling out on rocks, must be a pleasant sight for a hungry shark. The abundance of seals makes them a central target for shark species. These marine mammals are abundant in late August all along the ...