Combiningunderseaexplorationwithinnovativevisualizations,DRAINTHEOCEANSrevealshiddenevidenceofamazingunderseamysteries. Not“artistsimpressions”butwhatisactuallythere—downtotheverylastrivet.And,foritsfourthseason,itembracesagrippingnewstyle,tellingstoriespurelythroughthewordsofexplorersandarchaeologists,puttingviewersrightbytheirside.