WATER RIDES

With Sunday’s episode of Blue Planet II attracting 11 million viewers, here’s a glimpse of next week’s BBC1 instalment.

Filmed in the Indian Ocean, the episode shows sperm whales carrying passengers around on their bodies. This particular uninvited facial guest is a suckerfish that attached itself to the whale using a suction plate on top of its head.

It’s a bit like catching a bus – but how does it get off?