Danger Island.

Danger Island is a live-action adventure serial produced by Hanna-Barbera and originally broadcast in 1968 as a segment on the Banana Splits Adventure Hour. It was filmed in Mexico and directed by future Superman, Goonies, and Lethal Weapon director Richard Donner and featured Jan-Michael Vincent as Lincoln 'Link' Simmons. The series comprises a 3-hour adventure yarn broken down into 36 short chapters. Each chapter is roughly five minutes long and includes a suspenseful cliffhanger ending that is resolved in the next installment.