This video walkthrough will show you how to get all the 7 bots, 3 puzzle pieces, hidden trophy and photo spot in the Bubbling Under level of Astro Bot.
This is one of the few semi open-world levels, so it may be a little difficult find everything.
Use the following video and time stamps to find what you need:
0:33 Jumping Through Hoops Trophy
1:20 Bot #1
1:52 Puzzle #1
2:18 Photo Spot
2:41 Bot #2
3:07 Puzzle #2
3:37 Bot #3
4:03 Bot #4
4:53 Puzzle #3
5:11 Bot #5
5:56 Bot #6
6:45 Bot #7