I believe that is called clay.
Mire
wet, slimy, and/or soggy mud
Kanduli fish grows in sea water and not slimy while the mudfish is slimy and has sharp whiskers that stings the one who holds it
Muck is slimy mud, or something which makes something dirty. It is also an obsolete, derogatory term for money.
Mucus
They can come out of the water and skip on mud, that's why they are called mud skippers.
A mud flap.
Possibly originated in Mississippi and started being called Mississippi mud pie/cake because it looked like the thick mud that was along the banks of the Mississippi river, in later years as "Mud Pie/cake" became more main stream it just got called Mud Cake.
The slimy substance that the nose produces is called mucous.
Mud Phobia is the phobia (fear) of mud. Its called mysophobia, myso meaning mud and phobia meaning fear.
slimy
Yes. Sharks have a kind of skin teeth called denticles. That`s why a shark feels like sandpaper.
A flat topped mud brick tomb is called a mastaba.