If you're looking for leeches (to get leech blood) just listen, cuz they make a sound in the water when you're close to them (it sounds similar to someone making but bubbles inside the water). Everytime I go to the swamp i always find them quick and easy due to this and I hope this help other people too.
The yutyrannus, not the rex, is your best friend for leech hunting. The leech is vulnerable to the fear roar, and the debuff reveals their location. This makes hunting them a simple errand. You'll collect so much leech blood you could start a swamp fever clinic.
Fire DOES still work on mobile (i literally just tried it when a leech was stuck on my chest)
i read that fire didn’t work and read that it sometimes does but i thought let me just try and it WORKED!
just make sure u have some fire pit built next to u on the swamp next time so u won’t waste time collecting wood and stone for one when while ur HP is dropping (specially mine was so low already cuz a sacro gave me a toothy kiss on the butt when i was busy collecting rare flower)
Idk if Anyone knows this but if you have a leech a argentavius can remove them stand in front and open the command menu should be up saying( remove leech) my pro freinds were like u lieing but it's true thumbs for safe leech removal