What is a filter-feeding system inside the mouths of whales called?

caliro, the whale uses its tongue to scrape its baleen and swallows it.

Ok, and then once the food is in the baleen, how does it get to the stomach?

Humans, stop killing whales. In this day and age, no whale should be exterminated except,perhaps, those used to support Indigenous Peoples communities.

What about in other whales?