Roblox isle: Diving guide
Some Information that isn't included in the video.
A few spots that also don't require diving gear with the potential of water loot:
Shore near generators.
Bungalows.
Artifact A:
Flamethrower, Grenade Launcher and drones don't activate the Artifact.
If i missed anything Important let me know in the comments and i'll include said information in a pinned comment.