From an adventure standpoint Aquamirae really has it all. Once you've determined you want to engage with it, it is not at all hard to do so: just find a Deep Frozen Ocean, and enter the Ice Maze where you can definitely get lost if you play without maps or coordinates.
The atmosphere here is really good, and you're not just running around to your goal, you really have to pay attention to how you travel, as the water itself, not just the creatures in it, is dangerous.

The structures are challenging but fair, and are still engaging when you're taking on the content in multiplayer. Each comes with unique loot or snippets of information on what else is out there for you to discover and interact with.

The Cordelia boss fight is one of the better boss fights I've seen in this game, and you get a useful piece of armor that I wish was required in more places than just the Ice Maze.
The Eel however is very underwhelming, and its scroll reward is honestly not worth it.

The unique rewards are interesting and not just exclusively useful in the mod's structures, and there's some new plantlife allowing for underwater lighting, which is amazing.

The Ice Maze replaces the Deep Frozen Ocean. I personally like that ocean so that being gone is a bummer, but this is great for the aesthetics of the mod's content itself, and for the 'questline' it basically guarantees you won't have to find another Ice Maze to complete it.

Overview

No one can question why this mod is at almost 60 million total downloads across both Forge and Fabric, It was one of the first major high quality content mods that made it big. Adding a new biomes, mobs, bosses and items all that fit perfectly within the mods theme. When used along side the mod Obscure tooltips the items look simply incredible with unique designs and descriptions.

It doesn't try to change parts of the game that already exist nor does it and content that pushes outside of what the mod claims do.

I can't think of anything to criticise about this one, other than the fact I wish there was more of it! More customisation through the configs maybe?

While it has its bugs like all mods do there are usually quickly recognised and fixed.

There are only a small number of mods that I can confidently say match the overall quality provided by Aquamirae, While development on the mod has slowed recently new version and content for the mod are in the works and I personally am really looking forward to seeing what in store!

(This review will be used for both the Forge and Fabric Versions of the Mod)

Reviewer's PC Specs:
Windows 11
AMD Ryzen™ 9 7900 @ 3.70GHz - RAM: 32 GB
AMD Radeon RX 9070 XT - VRAM: 16 GB