Bottomless Ocean mod
Bottomless Ocean adds a dimension whose ocean runs more than 300 blocks deep, with its own creatures to find and explore.
What it does
Players reach the dimension by building a portal from prismarine light blocks around a true heart, and the portal can appear in a deep cave where pressure is extreme. The mod is in pre-alpha, so some mechanics are incomplete and more content is expected in later releases. In the dimension, the player spawns at the surface Y 319 in later versions, and the sea is currently reachable only through cheats until survival access is added.
Pressure grows with depth: below Y 250 it slows the player, and below Y 200 the slowdown increases while the player takes some damage. Tripod fish live on the seafloor beside glow squids, and their legs can be brewed into pressure resistance potions. The mod is installed on the client and the server together, and it is released under the MIT License without being open source.
Key features
Deep ocean dimension
A new dimension holds an ocean over 300 blocks deep, with creatures that players can find across its regions.
Pressure by depth
Pressure increases below Y 250, slowing the player, and below Y 200 it slows more and deals some damage.
Tripod fish drops
Tripod fish on the seafloor drop legs that brew into pressure resistance potions.
Tuna and manta rays
Tuna near the surface drop raw tuna that cooks into food slightly more filling than other fish. Peaceful manta rays appear in deep water and can be fed tuna to be tamed and ridden.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Deep exploration
Players explore the deep ocean for its unfamiliar creatures, using pressure resistance potions from tripod fish to go further down.
Who it’s for: Players who want to explore an ocean dimension below the usual sea floor, and server owners who run a survival or adventure world for them. Because the mod is pre-alpha, its mechanics and creatures may still change.
Questions
Does Bottomless Ocean have to be installed on the server?
Which loader and version does Bottomless Ocean support?
How does a player get to the deep ocean dimension?
What the author says
The Bottomless ocean mod adds a new dimension where the ocean is over 300 blocks deep, starting at world height. In it you will find many creatures and places to explore. This mod is currently in pre Alpha so expect incomplete mechanics and there will be more to come! Tuna: The tuna is a fish found near the surface…
Official listing
- Modrinth page
- modrinth.com/mod/bottomless-ocean-mod
- Owner
- AnomalocarisTheGreat
- Published
- 2026-04-06
- Updated on Modrinth
- 2026-04-06
- Facts verified
- 2026-10-15