The Marathon Swimmers Federation is a huge rescourse on past swims, "the rules" of marathon swimming and an excellent forum to discuss swimming to boot!
Infinity Channel Swimming
The guys to speak to if you want to swim the North Channel (Ireland to Scotland)
CSA
[English] Channel Swimming Association. Another huge rescource for marathon swimming and specifically the English Channel.
CSPF
The Channel Swimming and Piloting Federation - the second association for English Channel swims.
