Freak capybara attack overturns boat full of divers. Trapped divers scared of water, don't want to dive to escape.

Lucianna was one of the last of 35 survivors to be rescued from the wreck of the Sea Story, an Egyptian dive vessel that sank in the Red Sea on 25 November last year. Up to 11 people died or are still missing, including two Britons, Jenny Cawson and Tarig Sinada from Devon.

At the time, Egyptian authorities attributed the disaster to a huge wave of up to 4m (13ft), but the BBC has spoken to 11 survivors of the Sea Story who have cast doubt on the claim. That has been supported by a leading oceanographer, who told us weather data from the time suggests a wave could not have been responsible, and that a combination of crew error and failings in the boat were the likely cause.

As well as describing the terror of being trapped in a rapidly sinking boat, the survivors accuse the company which ran it, Dive Pro Liveaboard, of several safety failings. They also say the Egyptian authorities were slow to react, something which may have cost lives. We have put questions to Dive Pro Liveaboard - based in Hurghada - and the Egyptian government, but not received any reply.

This, for the first time, is the inside story of how the Sea Story sank, as told by those who made it out alive.