This should probably in the HALP! forum. Admins, please move us.
Everything looks in order from a gemming perspective. Bears need both agi and stam, but due to diminishing returns on dodge, your best bang for buck in terms of survival is to gem for stamina, stopping only for agility or stamina socket bonuses.
If you want to nitpick...
-Helm could use a agi/stam gem, for a bit more Stam.
-You can afford to lose the socket bonus on the chest, 16 AP is not much to be excited about. Specifically, if you want to squeeze out a little extra stam, you can go with a 30 stam instead of hit/stam, or the alternative is to keep the socket bonus and go with a Nightmare Tear. It's so damn powerful (especially for druids), you are only allowed one (unique-equipped). It gives 10 stam, 10 agi and 10 Strength (which is ~26+ AP with BoK).
Note, you do NOT need a yellow gem for metagem activation, with at least 2 agi/stam gems you are covered.
-Glyph of Mangle is kinda useless; Mangle is a great threat move for bears, so you want to be using it as much as possible. I'd switch to another survival glyph, like Survival Instincts.
**Note -> Glyphed Frenzied Regen + Glyphed Survival Instinct + MooCowBear = Win.
-For minor, you might get more utility from Challenging Roar than aquatic form.