The far side of the bay

The bay is wide, and Dizzy can't swim: in deep water he sinks to the bottom and walks. How do you reach the beach on the far side?
Nudge 1Where to look
Walking along the bottom works, but the far shore rises out of the water, and getting up there means swimming up.
Nudge 2A stronger push
Somebody in the village keeps a pair of flippers for swimming, and will give them to whoever helps him.
What you needOther problems to solve first
Solve these first (each opens its own page, no answers on the way):
Show the solutionThe whole answer, with a video
With the pair of flippers for swimming (from Denzil: Denzil frozen in ice) and the aqua lung, Dizzy swims: each press of jump is a stroke upwards. Cross under the water to the bay's east side and swim up to the far beach.