Freshwater Bay on the Isle of Wight is in a stunning location with beautiful clear water. If the tide is not high then you can swim from one side to the other. At each side there are caves which are lovely to swim into. You have to take care of the rocks below, but it is managable to negotiate them. It is not recommended to swim over to them if the tide is low as there are lots of submerged rocks. It is surrounded by high cliffs which give a superb view from in the water. It is a shingle beach which is steep in places to gain access. (A bit like Dover) But it is well worth it when in. Snorkling is great too. Divers regularly dive there.
When the sea is calm it is one of the most beautiful swims.
This is a crowd-sourced map. Abilities vary, and conditions change. Always assess risks for yourself before getting in.