Ключевые слова: 80s, aging, aquatic, be, coral, depth, dive, diver, diving, ecosystem, elderly, explore, fun, golden years, grandfather, happy, lifestyle, male, man, marine biology, marine life, ocean, octogenarian, portrait, purple, research, retirement, scuba, snorkel, snorkeling, student, study, summer, swim, swimming, toilet, travel, underwater, vacation, wisdom,