Water Bound (Sisters of the Heart Book 1) by Christine Feehan. - Her name is Rikki, a sea~urchin diver in Sea Haven. She has always felt an affinity for the ocean, and for the seductive pull of the tides. And now she feels drawn in the same way to the enigmatic man she rescued. But soon they will be bound by something even stronger, and their tantalizing secrets will engulf them both in a whirlpool of dizzying passion and inescapable danger.