For people that are working on legendary weapons (or ascended back pieces, or any other item needing lots of T6 materials), there’s a useful discussion/guide on reddit today.

http://www.reddit.com/r/Guildwars2/comments/1ai1px/guidet6_mat_farming_location_guide/

I’d add to the listed places the top of Southsun Cove between Point Lion and Point Pride in the water – skelk for bloods and fangs, turtles for blood and scales, barracuda and scorpion thingy (I can’t remember it’s name) for scales. And you can pop up onto the shore for Young Karka for bloods and karka shells (and an infinitesimal chance of a mini pet).