It’s not in for long, but when there is a high tide the whole of Southport Pier is actually under water. Unfortunately it’s not deep enough to swim in; in fact, a decent pair of wellies would get you out quite a distance before they filled with seawater!
The best option for shooting at high tide is to take a long exposure so that the shallow sea becomes smoothed with time. This shot took 40 seconds (and a bit of post processing)!