Deciding that the risk of jumping now is too great, you climb down toward her chest. More specifically, the way she's laying, you manage onto her collarbone. Climbing down from there is considerably easier, and the half-slide down her arm to the warm, soft sand is a bit of a trial, but you manage.
Once you hit the warm sand, you don't even stick around to recover your luggage. Literally nothing here is worth possibly losing your life over. Like any other rational human being, you rush to escape. Once you get out of sight of the shark girl, you increase your pace. Once you reach the road, the first person immediately stops and mercifully picks you up.
The man who picks you up is the local conspiracy theorist, and immediately believes your tale of giant shark women. He takes you into town, helps you get some new clothes, and helps you get to the airport.
As you settle into your seat on the airplane, you vow to never go on another vacation. At least, not anytime soon, anyway.
THE END