> "We found that juvenile play involves immature versions of adult reproductive behaviors that are crucial for males to access and mate with estrous females, and the time spent doing these play behaviors predicts how many offspring males eventually sire as adults."

> Adult male dolphins in Shark Bay form long-term alliances to help each other secure access to females and these alliances are formed between males who were closely bonded as juveniles. As adults, pairs or trios of allied males will coordinate their behavior to consort individual females, and this work shows that young males practice this coordination with their likely future allies, years before they become sexually mature.

In summary, dolphins that do practice-gangbangs in their youth tends to have more offsprings as adults.