Everybody has different views. It is quite standard to recommend people that start with underwater photography set up that allow for a wet wide angle lens
Unless you have specific requirements for land photography it makes more sense to buy a lower end camera that takes a lens than a more expensive one that does not
The proof of the pudding is when you will eventually go to Bahamas or you will try to fit a whole turtle in the frame and with the bare lens unless the critter is facing you this is not a possibility
Your shots are good but I don't see a manta or a shark in there? I shot tiger sharks of 3.5 meters years ago with an Ixus65...
Unless you have specific requirements for land photography it makes more sense to buy a lower end camera that takes a lens than a more expensive one that does not
The proof of the pudding is when you will eventually go to Bahamas or you will try to fit a whole turtle in the frame and with the bare lens unless the critter is facing you this is not a possibility
Your shots are good but I don't see a manta or a shark in there? I shot tiger sharks of 3.5 meters years ago with an Ixus65...