This position gives a whole new meaning to the phrase "Havin' a ball." With your back to the ocean, lie facedown at the shoreline. Place a beach ball under your pelvis, keeping your legs slightly spread and your arms outstretched in front of you. Your partner lies over you in the same position with his legs together between yours and enters you from behind. Why You'll Love It: With your pelvis elevated by the ball, your man has primo access to your G-spot. The combo of his thrusts and the lapping water against your skin feels downright heavenly.