An underwater survey west of Africa, off the Angolan coast, found that both the abundance and types of animals on the deep-sea floor increased significantly in response to the installation of a pipeline. Published in Frontiers in Marine Science, the study also revealed a large increase in the amount of litter on the seafloor, which was trapped against the pipeline.
source https://www.lifetechnology.com/blogs/life-technology-science-news/installation-of-deep-water-pipeline-gives-immediate-boost-to-sea-floor-animals
