This won't be a perfect guide, but at the time of this posting there were no other guides- it is better than nothing. I have taken screenshots of all the areas showing all the locations, nutrient caches, and license plates for each area. This is, however, after I have completed them all; you can still see all the markers, they are just grayed out and have a checkmark on them. Hopefully it is helpful, below are a few additional tips.
- Many of the collectibles will not be available until you are of Elder of Mega size, you may want to wait or just do some backtracking later.
- When you jump out of the water you can use the lunge ability a few times more to give your shark the extra height needed to reach the really high license plates.
- If you are near a collectible but haven't seen the icon on your map yet, you can use your sonar ability to help locate them. They will become highlighted if you are close enough and this can be very helpful when exploring the deep caverns.
- If you see an icon but can't figure out how to get there, check and see if there are grates nearby you can break that lead to new areas. Many grates lead to underwater tunnels and often contain nutrient caches.
Here is the link for The Gulf (These collectibles can be a little trickier because there are no landmarks on the map. Most of the collectibles are in underground caves or along the ocean floor, but there are a few at the surface.)
https://imgur.com/a/OrCUbrWEdit: It has been brought to my attention by Sanjoe that there is now an interactive map available for all the areas. Below is the link for that.
https://mapgenie.io/maneater/maps/port-clovis