When his boat capsized during a storm last year, Nigerian fisherman Tanti Leon clung to its upturned hull with his children and wondered if he should give up trying to fish in the waters around Lagos's flood-prone shanty town of Makoko.
The heavy rainfall also caused water levels to surge, destroying Leon's home, which like most buildings in the sprawling slum was built on sticks in the coastal lagoon facing the mansions and office towers of Nigeria's commercial capital.
