BOSTON — It looks like pure play: a harbor seal gleefully chasing a rubber duck. But for Reggae at the New England Aquarium in Boston, the toy is part of a training routine meant to keep him learning.

If you’re looking for the most wholesome thing to share with your family this week, look no further. A 33-year-old Atlantic harbor seal named Reggae is winning hearts across the internet—and all it ...

Seal Learning Rubber Duck Reggae, a 33-year-old Atlantic Harbor seal, rests his head on a rubber duck during a training session with Liz Wait at the New England ...