The bottom turn is a fundamental surfing technique that involves shifting weight to the back foot and turning the board sharply at the bottom of a wave, generating speed and control.

Trimming involves adjusting the sails to optimize their shape and angle relative to the wind, allowing for better control and efficiency.

Negative buoyancy diving is a technique where divers add weight to their gear to sink rapidly to a specific depth, allowing for extended exploration and observation.

The forward stroke is the basic paddling technique in kayaking, involving a smooth, alternating motion of the paddle blades to propel the kayak forward.

Belly riding is a surfing technique where the rider lies flat on the surfboard, with their belly facing the wave, providing a stable and controlled ride.

Gybing is a sailing maneuver that involves turning the boat's stern through the wind, allowing it to change direction while maintaining speed and momentum.

Drift diving is a scuba diving technique where divers allow themselves to be carried by ocean currents, exploring underwater environments while minimizing effort and maximizing observation time.

The eddy turn is a kayaking technique used to change direction quickly in tight spaces or around obstacles, by utilizing the eddy currents created by the water flow.

Stand-up paddleboarding is a water sport where riders stand on a large surfboard and use a long paddle to propel themselves through the water.

Reefing is a sailing technique that involves reducing the sail area by folding or rolling up a portion of the sail, typically done to manage strong winds and maintain control of the boat.

Cave diving is a specialized scuba diving technique that involves exploring underwater caves and caverns, requiring specialized training and equipment to navigate tight passages and manage potential hazards.

The reverse stroke is a kayaking technique used to paddle backwards, involving a backward motion of the paddle blades to slow down or change direction.

Drop knee is a surfing technique where the rider kneels on the surfboard, with one knee on the deck and the other hanging off the side, providing stability and control in challenging waves.

Mooring is a sailing technique that involves securing a boat to a dock, pier, or buoy using ropes or lines, preventing it from drifting away.

Wreck diving is a scuba diving technique that involves exploring shipwrecks and underwater ruins, providing a glimpse into maritime history and the mysteries of the deep.