it looks so freaking cold man! how come the water level is up higher than the beach on the right? is it a dam or weir or something?

This is from Wiki:

West Kirby contains a large man made coastal lake, the 'Marine Lake'. The structure is large enough to hold sailing events, windsurfing and many more water related activities including: canoeing; kayaking; and power-boating.[7] In early 2009 it was reported that the lake had undergone structural damage, most likely due to estuarine erosion. Since this report a £750K refurbishment has taken place to help restore the lake, and is now back to holding water sport activities

so a local council paid 1million $ to create a windsurf spot??????? holy crap - our council just fills our spots up with moared boats, jetski operations, mored ****ty barges and allows it to silt up!