Sharks have remarkable connections with various marine animals that highlight their importance in ocean ecosystems. For example, baby Zebra Sharks mimic banded seasnakes to avoid predators, and Tiger Sharks help protect seagrass by keeping Green Turtles from overgrazing. Additionally, filter-feeding sharks rely on plankton for food, while Greenland Sharks have a unique relationship with copepods that can help them find prey even when they lose eyesight.