My daughter's currently reading a book with 5 kids in called:
Wisdom
Virtue
Peace
Bowie
Pixie
It also has 2 surfer dudes in but one is called Sam. The other is Quinn.
These come from a website saying they are names 'inspired by the ocean':
Girls:
Abalone, Blue, Cerulean, Coral, Hydra, Isla, Ling, Mahi, Marina, Molly, Marsha, Orca, Salamanda (!!), Shelly, Sandy, Star
Boys:
Cruise, Dorado, Dune, Finn, Gar, Jetty, Keel, Krill, Mako, Marlin, Pike, Ray, Rip, Tad, Tide, Zander
I have a (female) friend called Mala - it means 'well being' so kind of hippy.