Vent crabs are a type of crustacean found near hydrothermal vents on the ocean floor. They belong to the family Bythograeidae and are known for their unique adaptations to extreme environments, such as high temperatures and pressure. These crabs primarily feed on bacteria and other microorganisms that thrive in the nutrient-rich waters around the vents. These crabs have a distinctive appearance, with long legs and a flattened body that helps them navigate rocky surfaces. They play an important role in the ecosystem by recycling nutrients and supporting the food web in these deep-sea habitats. Their presence indicates a healthy vent community, contributing to the overall biodiversity of the ocean.