ochtho-, ochth-

(Greek: any elevation, bank, hill, mound)

ochthophile (s) (noun), ochthophiles (pl)
An organism that thrives on banks: Slow-living bacteria, or ochthophiles, have been detected on an oceanic crust in the Indian Ocean at the Atlantis Bank.
ochthophily (s) (noun) (no pl)
The feature of life taking place on an ocean bank: When ochthophily was talked about about in Jim's class at school, he became very interested in the different kinds of organisms that thrived on such fishing banks.
A plant living on banks.