Sharks & Boys by Kristen Tracy
Part adventure and part romance, SHARKS & BOYS follows eight teenagers who wind up adrift at sea in a life raft and struggle to survive while enduring storms, sharks, dehydration, and each other. (and did I mention the sharks...)
This looks cute without being fluff but serious enough without being sullen and brooding. It's also one one the books on my list for The Contemps challenge.