50 years ago, the U.S. Navy enlisted sea lions and other marine mammals
Excerpt from the December 22, 1973 issue of Science News
![Sea lion playing a video game](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/12/110223_mt_50ya-seal_feat.jpg?fit=1030%2C580&ssl=1)
Spike the California sea lion, a member of the U.S. Navy Marine Mammal Program, is trained to play a video game — part of research into cognitive enrichment for animals in the program.
Jaime Ciciora