Wonder, 75, starred in a memorable Cosby Show episode that aired in 1986. In "A Touch of Wonder," Denise (Lisa Bonet) got into a car accident with Wonder, who played himself. Warner and the rest of the cast joined Wonder for a performance of " I Just Called to Say I Love You " during the show.

The ‘Cosby Show’ actor was swimming at a beach in Costa Rica that was well known for its strong surf and rip currents.

The Costa Rican beach where Malcolm-Jamal Warner tragically drowned was clearly marked with bold warning signs about rip currents and high drowning risks ... TMZ has learned.