The competitors dive off to begin the tough 10k open water event in the World Championships at St Kilda beach

20 year-old Cassandra Patten wins the silver medal in the event, Britain's first medal of the World Championship

Eva Berglund of Australia applies an ice pack to her face after completing the gruelling race

All 42 swimmers are stung by jellyfish and several have to be rescued from the water

Russia's Larisa Ilchenko overcame the conditions to win the gold just over a second ahead of Patten

Anastasia Davydova and Anastasia Ermakova of Russia win gold in the synchronised swimming duet final

Serbia water polo goalkeeper Denis Sefik cannot stop Thomas Schertwitis of Germany from scoring a goal

Magnus Frick of Sweden competes in the men's one-metre springboard event in Melbourne