In 'If Sharks Disappeared,' author-illustrator Lily Williams explores what would happen to our oceans if sharks were to vanish. The book takes readers on a journey through a healthy marine ecosystem, showing how sharks are apex predators crucial for keeping the food web in balance. It vividly illustrates the chain reaction of collapse that would occur without sharks, from overpopulation of their prey to the destruction of vital habitats like seagrass beds. Ultimately, it's a hopeful and empowering call to action, showing that we can still protect sharks and preserve the health of our planet.