There sure is a lot to discover below the surface of our oceans.

I recently watched "Diving Deep" https://de.oceanfilmtour.com/en/movies/volume-7/diving-deep/ a documentary (part of the Ocean Film Tour 2020) about Mike deGruy, an ocean cinematographer.

deGruy showed what the chemicals that were used to disperse the oil during the Deepwater Horizon spill did to the life on the ocean floor. The chemicals removed the oil from the surface of the ocean (where it was visible), but made a mess below the surface. A wakeup call for sure.

He also appears to have been a really nice, fun guy.