This project is a joint venture between Delphi Creative and Carl Lyons, a traditional Illustrator.
The environments were filmed on a number of underwater video shoots  in the Red Sea.This footage was then motion tracked and Camera Match Moved to allow the CGI team to design and model an entire ecosystem of fantasy underwater creatures.

Extra computer generated sealife was also added, as shown with the angelfish below.

Creature design: Carl Lyons