Coinz Grouped by the Grunt most likely to acquire them ... acquired by Grunt #4 I (GooRoo) believe that Gaby intended each Grunt to 'clean out' the big pool of water nearest them. The assumption is that the solver workz with a Grunt until he is 'stuck' before working with another Grunt.
No.	X	Y	Description of where the object is found
1	46	51	In a Sugar Cube atop an ordinary tile .
2	48	51	In a Sugar Cube atop an ordinary tile .
3	48	53	In a Sugar Cube atop an ordinary tile .
4	46	53	In a Sugar Cube atop an ordinary tile .
5	35	45	In plain sight on a BT that is submerged half the time.
6	33	42	In plain sight on a BT that is submerged half the time.
7	35	39	In plain sight on a BT that is submerged half the time.
8	38	37	In plain sight on a BT that is submerged half the time.
9	41	39	In plain sight on a BT that is submerged half the time.
10	43	42	In plain sight on a BT that is submerged half the time.
11	41	45	In plain sight on a BT that is submerged half the time.
12	47	32	Under the Giant Sugar Cube pile which revealz it in the center.
13	34	52	In a Sugar Cube atop an ordinary tile in the south central gully.
14	29	52	On a Black One-Time Switch (BOTS) in the south central Gully pool.
15	29	58	In a Sugar Cube atop an ordinary tile in the south central gully next to the Warpstone .
16	34	12	In a Sugar Cube atop an ordinary tile in the north central gully.
17	29	6	In a Sugar Cube atop an ordinary tile in the north central gully.
18	11	32	Under the Giant Sugar Cube pile which revealz it in the center.