Where does a sea butterfly live?

Sea butterflies, or pteropods, primarily inhabit cold and temperate ocean waters, particularly in the Southern Ocean around Antarctica and in the North Atlantic and North Pacific Oceans. They are often found in the upper layers of the ocean, typically at depths of 0 to 1,000 meters, where they thrive in regions with sufficient phytoplankton, their primary food source. These tiny, shelled mollusks play a significant role in marine ecosystems and food webs.