If you're looking for manga similar to WAVE!! Surfing Yappe!! Movie 3, you might like these titles.
Shachi, a young fisherman who lives in an peaceful island, is involved in a tragic event that reminds him the death of his father, which happened years ago.The boy then decides to start a journey in the mysterious ocean.
What's living in the overwhelming darkness deep within the sea? Take a glimpse into this strange world about a boy working at a deep sea aquarium.
Free diving is an extreme sport, and each meter added to its record brings us closer to the sea bed and further from the surface where one can breathe again. In this sense, free diving has a direct connection with death, with which our fight continues, refashioned over time, bit by bit. So, why would one free dive, and risk his life? The answer lies within the mysterious bond between the sea and human kind. And in the fast evolving world of competitive diving, new data emerges that casts light on this bond.
It's been years since Marie was saved from the ocean, and has lived on a solitary island ever since. Her first and only friend is Canu, a strange creature from the sea. But she hasn't seen Canu in awhile, and ventures out to find it...