North Atlantic right whales, which generally average 40-60 feet in length and can weigh more than 100,000 pounds, are among the most endangered whales in the world. In December 2015, the North Atlantic Right Whale Consortium released a report confirming that 526 right whales still exist. That number had increased by four from the previous year.
North Atlantic right whales, named because their valuable blubber made them the "right" whale to hunt, have been protected from whalers since the 1930s. Even still, they face many manmade threats like entanglements in fishing ropes and netting, ship strikes and water and noise pollution.
The right whales, which can also be found off the coasts of Georgia and Florida, seem to be increasing slowly in number. The number of living whales in 2014 was two times the number reported in 1996. On Thursday, the National Oceanic and Atmospheric Administration said biologists spotted three new right whale calves off the coast of Georgia in just two days.