You can always find them in the swamps being attacked by sarco, kapro, boa, and baro..

Quite possibly the only completely harmless creature in the swamp.
#SaveTheDiplocauluses

Has a head resembling a stealth bomber, but it’s attack is only effective towards trilobites 🤨.

On The Island you can find these more frequently at the Eastern swamp as opposed to the Western/Redwood swamp area.

Bruh I have found thousands of them running out the water for no reasons

It sorta looks like a Japan giant salamander.

If having trouble finding one in the swamps try bringing a parasaur with you and use its detection ability to see all nearby carnivores hiding in the water and walk up to them to check if they are a diplo. as long as you have some sarcos or barrys to clear out the piranhas you will find one in a couple of minutes easy.

Usually is being chased By a dinosaur from the swamps

Will farm about 25 chitin per trilobite and will kill and collect a trilobites loot in 1 bite, also you dont need scuba gear since you can ride it and take its oxygen.