RADULA movement in prosobranchiate gastropods is a factor in the predator-prey relationship of many species of gastropods (Naticidæ, Muricidæ and others) and other molluscs, involving ...

Most snails have thousands of microscopic tooth-like shapes on their ribbon-shaped, tongue-like appendage called the radula.

Once the food is fully broken down, an octopus scoops food into its mouth using its tongue-like radula. In this video, we see Uno doing something similar after his handler puts food on his tentacles.

These nudibranchs have a rough, tongue-like feeding structure called a radula. They use this to scrape their food ... It then uses an expandable hood that encircles its mouth to capture free-swimming ...