Which animals are called the vacuum cleaners of the sea?

The animals commonly referred to as the "vacuum cleaners of the sea" are sea cucumbers. They play a crucial role in marine ecosystems by consuming organic matter that settles on the ocean floor, helping to recycle nutrients and maintain healthy sediment conditions. By feeding on detritus and decaying materials, they aid in the cleaning and aeration of the seafloor. Their activity contributes significantly to the overall health of marine environments.