Aquatic sills

Aquatic sills refer to underwater structures or formations that are typically found in marine environments. They can include a variety of geological formations, such as: 1. **Sills in Geology**: In geological terms, a sill is a tabular sheet of igneous rock that has intruded between older layers of sedimentary rock. While this definition primarily applies to terrestrial geology, the principles can extend to underwater geology as well, where these formations can influence marine ecosystems.