Umi and Sora are not alone in their strange connection to the sea.
Ruka\'s dad and the other adults who work at the aquarium are only distantly aware of what the Children are experiencing as they get caught up in the mystery of the worldwide disappearance of the ocean\'s fish..
They were raised by dugongs and hear the same strange calls from the sea that she does.
Now she feels drawn toward the aquarium and the two mysterious boys she meets there, Umi and Sora.
When Ruka was younger, she saw a ghost in the water at the aquarium where her dad works.
But time is quickly running out...
This leaves Umi severely depressed, and it is up to Ruka to help her new friend find his brother.
Anglade, a wunderkind who was once Jim\'s research partner, lures Sora away with the promise of answers.
As penance for letting the boy die, Jim has been searching the world for other Children with those same ties to the ocean.
Forty years ago, Jim met another young boy with the same powers.
Umi and Sora are not alone in their strange connection to the sea
