What is a whale fall that comes after the death of sea mammals?

Timmy - the famous stranded whale, stuck in the Baltic Sea and controversially rescued - has died. The carcass is stuck in the shallows off Denmark, and the Danish government is planning to remove it. But what actually happens to a whale when it dies? If it's in the deep, it's called a "whale fall," and an entirely new ecosystem springs up around it. The World's Host Marco Werman speaks with scientist Kirstin Meyer-Kaiser to learn more.