Later, the same training methodology was used in the 1950's to train large marine mammals. (notinthedoghouse.com)
This is a huge impact on a population of less than 450, making them the most endangered large marine mammal on the planet. (sulfurstudios.org)
Whale - watching boats out of Southern California are reporting almost every excursion returns to harbor with giddy patrons carrying images of large marine mammals in their cameras and minds. (longbeachcruises.com)