The Sunlit Zone When most people think of the ocean, they think of the sunny upper layer called the “Sunlit Zone” or more scientifically, the “Epipelagic” layer or zone. It ranges from the surface to 656 feet (200m) deep. Here, creatures such as hammerhead sharks,...

Cherilyn Chin
Cherilyn Chin is a marine biologist who has worked at public aquariums, including the Monterey Bay Aquarium and Steinhart Aquarium in San Francisco. She has held a three-day-old sea otter in the palm of her hand, cuddled with a week-old penguin chick, and gotten a painting from a giant pacific octopus. Cherilyn also has a whale shark and manta ray named after her. She enjoys writing children’s books about ocean animals, has four early-reader books (called Lily Lu to the Rescue) that came out January 1st, 2025, and has an award-winning blog, “Ocean of Hope” (https://oceanofhope.net).

