Description Seafoam Wavefollower, a juvenile sperm whale and skilled navigator, gets himself trapped in a sea cave under Mowie.
Before the Twenty-Four Hour Rule forces his family to abandon him, Seafoam is forced to rely on the ghost of a mysterious Hawaiian boy he doesn't trust to lead him the way out via an underground river.
Warriors, sorcerers, and a giant whirlpool (among other traps) bounce him from one fine mess to another.
Time is running out.