The monofin in freediving: the dolphin technique

The monofin joins the feet together on one surface and gives a movement like a dolphin. It is the favorite of freediving champions.

What distinguishes the monofin

A single stroke of the unified fin generates greater propulsion with the same energy compared with two separate fins, and this keeps energy and oxygen for longer.

Correct movement technique

The wave movement
The whole body takes part in the movement like a wave that starts from the midsection and ends at the fin. It is not only a leg movement but a full body rhythm.

Frequency and amplitude
Slow, deep strokes are better than fast, shallow strokes for saving energy.

Suggested training

• Start by getting used to wearing the monofin in the pool
• Wave-movement exercises on the edge out of the water
• Horizontal swimming in the pool focusing on rhythm, not speed

---

The monofin turns the freediver from a swimmer into a voyager in the ocean.