Much of the central Blake Plateau was originally thought to be soft sediment. However, mapping conducted during the Windows to the Deep 2018 and 2019 expeditions revealed that the region is actually composed of many mound features created by cold-water coral communities. During Windows to the Deep 2019, the team dove on two of these newly revealed mounds and encountered what was described as one of the largest aggregates of thickets of Lophelia coral seen to date in the region.