After a late-afternoon swim in Lake Maracaibo to cool off from the sweltering heat, we got our first glimpse of towering clouds amid the glow of the setting sun.

BBC: In Venezuela, nature��s most electrifying lightning show

From here, either enjoy a swim in Lake Galilee (from one of the many pebbled beaches or pay to use the facilities of Kibbutz Ginosar, 2km east around the lake).

BBC: Walking with Jesus in the Galilee

The 62-year-old Nyad -- who completed her Lake Ontario swim in 1974 at the age of 24 -- was a third of the way to her goal as of Sunday evening.

CNN: 14-year-old swims solo across Lake Ontario