Follow Sea Horn and BigMouth as they venturefrom the safety of the Seahouse in the deep ocean to the surface of the sea, meeting all sorts of wonderful, exciting and dangerous creatures on the way. Detailed, imaginative and full of excitement, this is an easy read for parents and children alike. Will Sea Horn and Big Mouth evade the tentacles of the deadly Opus? Will they survive to see the big shiny ball that floats in space...?