#A11: Guide Arrow and Aquapelago

 I've said before that I enjoy the logic invited by no adjacent and connected unshaded and no 2x2 unshaded, but I only today understood another way of making sure loops don't appear in Guide Arrow, which helped inspire the fused variant. 

https://puzz.link/p?guidearrow/8/5/81iczccn

https://puzz.link/p?guidearrow/9/9/55hdmbgdgezvdhdhbkeg 

https://puzz.link/p?guidearrow/12/11/61ldmbhbgdsdwdxdgevchchct 

https://puzz.link/p?aquapelago/8/5/4zx4 

https://puzz.link/p?aquapelago/9/9/n2o4y2i.y6o.n 

https://puzz.link/p?aquapelago/12/11/co.o1mbv.zz.zj.o.p

Variant: the unshaded cells cannot form a loop:

https://puzz.link/p?aquapelago/v:/12/11/g1oczq.k2zr.k.zqbo1g

I was originally planning to make it in penpa with Guide Arrows, but it kinda just resolved itself.