You can build on its back without a saddle, however IF YOU EQUIP A SADDLE YOU WILL LOSE EVERYTHING. If you cryo you will also LOSE EVERYTHING regardless of saddle or not. Vote for more people to see

-AK

They apparently have some sort of gravity field on them allowing players to walk on its back while submerged

Don’t cyropod them!! You will lose everything you built on their shell!

On ark ascended gen one the water boome changed a bit and so did the method to tame these. The sabertooth salmon and coels that spawn will no longer hit the megachelon resetting the tame making it a bit easier as you only have to make sure other wild sea creatures don't attack it. The downside of the new changes are the new water physics. The surface of gen one has a new mechanic that pulls you up, the turtle likes to get stuck on the surface of the water and will cause the parakeet fish school to explode upon coming in contact with the surface. The best way to tame these is to lure the megachelon to deep water instead of luring the fish to the turtle which usually resides in shallow waters. They like to swim up so starting the process in deeper water ensures it goes much more smoothly but can be a pain to lure the turtle as they're slow. Other than that just find a parakeet school and let it clean the turtle while defending the school of fish from the other fish that spawn in. It's a long process, I've heard on 1x it's 30 minutes regardless of level. Just be sure not to accidently hit the turtle while taming and it goes a lot faster than you'd imagine.

You can breed them in the squid trench on rag and incubate the eggs there also

You can use hlna to teleport you and your turtle anywhere (they can walk on land) but can only breed under water.

Tamed you'll be able to build on its back. When diving he provides an oxygen bubble on his back allowing you to submerge your base on the floor of the ocean.

Are you turtley enough for the turtle club?

Passive Tame: You kite a parrot fish swarm to the turtle then guard the turtle from sharks and things.

While the turtle "feeds" on the swarm! Any damage resets timer to 0!

Getting inside it with Honey is BS and will NOT work.

Crop plots built on the shell are automatically irrigated. No need for pipes!

Lead it into a line of stone behemoth gates and close a gate behind it and it will be trapped or you make a square box of Dino gates and nothing can mess its taming up while it’s being tamed so up this!!!!!!!