How do urchins consume their food?

Sea urchins eat using a structure called Aristotle's lantern

Explanation:

It is made up of five hard plates that come together like a beak. They use their beak-like mouth to scrape rocks clean of algae. ... Sea urchins mainly congregate in colder, offshore waters, but sometimes travel into shallower waters looking for food.

currents is the correct answer.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.