This musician taught an octopus to play an underwater piano

YouTuber and musician Mattias Krantz spent six months teaching an octopus how to play a custom-built piano. The process required a lot of creative problem-solving skills, including motivating the octopus, whom he named Takoyaki, to play notes by frequently rewarding him with food. Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK