After a series of roles in television and film during the 1990s, including a small part in Forrest Gump playing the title character's son (also named Forrest Gump), Osment rose to fame for his performance as a young unwilling medium in M.
He has one sibling, actress Emily Osment, who is almost four years younger.
Osment's parents have described his childhood as a "good old-fashioned Southern upbringing".
The 29-year-old proved he was all grown up as he frolicked in the sea with a female companion during some downtime in Mexico.
Haley wore black short and kept his designer shades on as he ran into the sea to lark around with the dark-haired beauty.
He subsequently appeared in leading roles in several high-profile Hollywood films, including Steven Spielberg's A. Artificial Intelligence and Mimi Leder's Pay It Forward.