Social media has exploded as users mourn the death of TV wildlife presenter David Attenborough. The problem is, he isn't dead.

Attenborough's brother, British director and actor Richard Attenborough, died on Sunday at the age of 90 after battling a long illness.

During his career, which spanned six decades, Attenborough appeared in movies such as Brighton Rock, The Great Escape and Jurassic Park, and directed Gandhi, which marked the highlight of his career. The movie won eight Oscars, including best film and best director.