ModsJava
Deeper Oceans
Oceans, but deeper!. Free Minecraft Java mod for 1.21.1, 1.21.11, 1.20.1.
⬇ Download on CurseForgeDeeper Oceans
Deeper Oceans is a project that makes oceans twice as deep as vanilla.
Mod Exclusive: Vanilla ocean monuments are lowered 20 blocks to prevent the legs of the monument looking too out-of-place. There's also a config file for changing the ocean's depth and the ocean monument offset.
Tectonic is not compatible as it already makes oceans deeper.
Deeper Oceans is a free Minecraft Java mod. Compatible with Minecraft 1.21.1, 1.21.11, 1.20.1, 1.21.6 and newer. Downloaded 2,413,117 times (via CurseForge). Download it and open it directly in the game.