Waterproof Body 2X Undergarment Leggings - Benthic Scuba
Fourth Element X-Core Undergarments (Leggings) - Benthic Scuba
Benthic gear: How do you upgrade it, and how do you get it in the first place?
Fourth Element Arctic Leggings (Men's) - Benthic Scuba
Benthic Armor in Rise of Azshara - Wowhead
If you still have a bunch of Prismatic Manapearls you can buy benthic pieces to disenchant them and make some extra gold. I bought 588 of them lol, profit. : r/wow