Can we talk to whales? Their brains are six times the size of ours and scientists think they are very clever. So some hope tech can get them talking.
AI could unlock secrets of ocean giants
Whale of a time: Whales have been around for 50 million years, much longer than hominids. Glossary
Sperm whales - The largest of the toothed whales. They live in pods and can be up to 59 feet long.
Translate - Change words from one language to another.
AI - A computer programme that has been designed to think.
Cetacean - Aquatic, marine mammals, such as whales, dolphins and porpoises.