Apple Watch 7 - open water swim
We understand is not GPS but the accelerometer that calculates distance.
We understand that water and radio signals don't go hand-in-hand.
As HUMANS, before and after the swim (allegedly when starting and ending the Activity) the watch should have a GPS signal. A time lap has occurred in between.
WHY not using those two info and adjust total distance to a correct one screw is about 30% of the distance today !!
OK to grant the detection points, estimate the splits, and so on... but gee 30% of the total distance is HUGE (2/3 of a mile "detected/accelometrically", 1 mile total distance ) .
.. otherwise don't ask yourself why are people switching to other OS/devices...
If we use your watch , we are multi-purpose medium human beings: we are not Olympians!
FIX THE BASICS