Cathy Church: The techniques and art of shooting close underwater
Paul "Duxy" Duxfield: Getting the best from your Compact Camera
Martin Edge: Edge of the Light
Charlie Hood: The Complete Guide to Wreck Photography
Maria Munn: Capturing the World's Largest Animals with a Compact Camera
Dr Alex Mustard: Mastering your strobes
Jukka Nurminen: Beneath the waves of the Baltic Sea
Mark Koekemoer: Pilots in Gibralter
Peter Scoones: Underwater Wildlife Filming
Shark Trust: The Important work of the Shark Trust
Also on the Sunday afternoon there is a "Teach In" at the Aquatics Centre's 5m pool with experts on-hand to help folks improve their techniques. I have been told by the organisers that there will be a (real) mermaid to photograph.

Also on the Saturday night there is a Gala dinner at the Palace Hotel in aid of the Sharks Trust.
City Inn where the talks will be held are currently doing a deal if you quote Visions when booking - I think it is something like £79 for a room (not per person).
For tickets see http://www.visionsinthesea.com/tickets.html