Fourth Element Arctic Leggings (Women's) - Benthic Scuba
Fourth Element Arctic Leggings (Men's) - Benthic Scuba
Fathomstalker Leggings - Item - World of Warcraft
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
Benthic gear - Wowpedia - Your wiki guide to the World of Warcraft