Complex sentence: As a teenager, he and his family spent their summer vacations in San Diego and would go to SeaWorld every year, and after a number of summers watching the trainers riding the killer whales, Silverman developed a fascination with the whales and trainers.
Split into simpler sentences: As a teenager, he and his family spent their summer vacations in San Diego and would go to SeaWorld every year. After watching the trainers riding the killer whales, Silverman developed a fascination in watching the whales and trainers.