Whales feast when hatcheries release salmon
![humpback whale](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/07/071117_SM_whale_main_free.jpg?fit=860%2C460&ssl=1)
BIG GULP Crowded prey makes humpback whale feeding (shown here in the open sea) worth the effort — and helps explain a whale innovation: going out to dinner at fish hatcheries.
roclwyr/iStockphoto
BIG GULP Crowded prey makes humpback whale feeding (shown here in the open sea) worth the effort — and helps explain a whale innovation: going out to dinner at fish hatcheries.
roclwyr/iStockphoto