Swimming in deep water?

Question

is it harder to swim in 200 ft deep water than 15 feet water?

if so, then why

Answer 1

Well presumably 200 ft of water would involve the sea, so yes, there would be currents and tidal ebbs to consider which would be much more challenging to swim than 15 ft of the same, whether in the sea or not.

Answer 2

if u dont look down then ull just imagine that ur still in that 15ft water:)

Answer 3

No, it is exactly the same.

Answer 4

If you worry about the depth, then you have extra stress on your heart, so you will spend significant energy worrying, and it will be harder.