Ireland's Dr Octopus explores one of the last great frontiers

Discovering new species and protecting them is all in a day’s work for Professor Louise Allcock, as she explores one of the planet’s last great frontiers, writes Lorna Siggins.

Professor Louise Allcock wasn’t really thinking she would be able to phone home when she ventured 200m deep in the Indian Ocean a few weeks ago.

Her smartphone did come in very handy, however, when a sunfish swam right up to the window of her submersible.