https://thebusybiscuit.github.io/builds/TheBusyBiscuit/MobCapturer/master/
This Addon adds a Mob Capturing Cannon which you can use to capture mobs as items. You can find more info on the project page, it is inspired by the Safari-Nets from the mod MineFactory Reloaded.
it would help long distance mob moving, for example, me, across the map over the ocean.