Sir David Attenborough to present Blue Planet sequel

Sir David Attenborough will present the sequel to 2001's The Blue Planet, the BBC has announced.

The seven-part series, to be shown later this year, will aim to highlight recent scientific discoveries.

Filming innovations include suction cameras fitted to the backs of orcas.

"I am truly thrilled to be joining this new exploration of the underwater worlds which cover most of our planet, yet are still its least known," Sir David said.