Despite strong conservation efforts since 1935, the North Atlantic right whale population is still small, with only about 450 whales. Right whales typically slowly skim feed plankton at the surface or subsurface, making them prone to being hit by ships or entangled in fishing gear. Want to help the population out? Check out the Whale Alert app, which helps map where these endangered whales are swimming in places like Stellwagen Bank National Marine Sanctuary: http://www.whalealert.org/.