I'm thinking of using it for my ORAS team since I've never used one. I'm also aware that it's his hidden ability, but it's not for eevee o:
No Skrelp can only be bred with Adaptability if a Female Dragalge or Skrelp with Adaptability is bredd with another of its breeding group, Or if a Male or Female Skrelp/Dragalge iwith Adaptability is bred with a ditto.
Source: http://bulbapedia.bulbagarden.net/wiki/Pokémon_breeding (gotta scroll a bit)
No you cannot, for a couple of reasons.