Centuries of uncontrolled whaling have pushed this species to the brink of extinction. Despite over 60 years of protection, the total population still numbers less than 300. A combination of human actions and natural forces are slowing their recovery. Right whales are currently listed as endangered under the Endangered Species Act and are also protected by the Marine Mammal Protection Act in the United States and the Marine Mammal Regulations of the Fisheries Act in Canada. Right Whale Characteristics Adult right whales are 44 to 55 feet long and weigh 45 to 55 tons.
Females are slightly larger than males.
Right whale habitat is found throughout the continental shelf of the east coast of North America. Blubber makes up about 40 percent of their body weight. Due to their high percentage of body fat, right whales spend long periods of time on the surface, resting, socializing and feeding. Right whales are unaware of vessels, particularly when engaging in feeding or sexual activity. They will not move out of the way of oncoming vessels.