Is there a ocean equivalent of SpaceX that is publicly traded?

The vast majority of our oceans have not been explored in the time that we’ve existed on Earth. Oceans can be overlooked but there is a plethora of materials that are untapped beneath us. Deep sea mining will probably become an extremely lucrative business at some point with possible environmental detriments. Not sure if there are any publicly traded businesses related to deep sea mining/exploration. If anyone is knowledgeable or knows of any please drop a comment. Trying to find any reputable companies of the sort if they exist.