Auto-scroll, or scroll manually. 5 Whales have the largest of all mammal brains. Pacific, population declining . The Marine Mammal Protection Act of 1972 makes it illegal to harm, harass, or kill a gray whale in U.S. waters. In 1973, the species is added to the endangered species list .
People witness the recovery of an endangered species through whale watching.
The IWC's international moratorium on all commercial whaling takes effect. Japan, Norway, and Iceland angrily protest. The whales are consumed as gourmet meat . Japanese visit aboriginals worldwide to lobby for indigenous hunts. Whale meat is added to school lunches to encourage Japanese children to eat whale, CNN .