Waterproof Body 2X Undergarment Leggings - 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
Easy and Simple Gold! from Manapearls & Benthic Gear - YouTube
Kahs
Benthic gear - Wowpedia - Your wiki guide to the World of Warcraft
On the Back of the Giant" Leggings for Sale by cobaltplasma | Redbubble