Do beluga whales live in the Atlantic Ocean?

No. Because of Hunting & Whaling by humans. Gray Whales have been hunted since the 16th century. Humans have been whaling gray whale species for over 4 decades now. This hunting has significantly reduced the gray whale populations. The north atlantic population of gray whales were totally wiped out due to whaling even before the 19th century. Around 1950, governments worldwide declared the gray whale as an endangered species and banned whaling them