Are there sea shells in a coral reef?

Yes, there are sea shells in coral reefs, as these ecosystems provide habitats for a variety of marine life, including mollusks that produce shells. Many types of shells can be found in and around coral reefs, including those from snails, clams, and other shellfish. These shells can contribute to the overall biodiversity of the reef and play a role in the ecosystem's health. Additionally, they can serve as protective homes for other organisms.