[1] At the 2012 Summer Olympics he was part of the Croatian team that won the gold medal.

From 2016 to 2019 he played for Greek powerhouse Olympiacos, with whom he won the 2017–18 LEN Champions League.

[2][3] He started playing water polo at the age of 12, and he made his national team debut in 2005.

He is the only water polo player in the world to have won 7 FINA World Championship medals (2 gold, 1 silver and 4 bronze), an all-time record as of 2017 Bušlje was given the honour to carry the national flag of Croatia at the closing ceremony of the 2020 Summer Olympics in Tokyo,[4] becoming the 29th water polo player to be a flag bearer at the opening and closing ceremonies of the Olympics.

This biographical article relating to a Croatian water polo figure is a stub.