Researchers 'hopeful' after North Atlantic right whale baby boom

Twenty-three North Atlantic right whales were born during this year's calving season — the highest number in more than 15 years.

Twenty-three North Atlantic right whales were born during this year's calving season — the highest number in more than 15 years.

Twenty-three North Atlantic right whales were born during this year's calving season — the highest number in more than 15 years.