Can a whale swallow a puffle fish?

Just the opposite. Puffins eats fish. Adult puffins mostly eat small fish, such as sand eels, herring, hake and capelin. Puffin diets vary from colony to colony because of the variety of fish around the breeding islands. During winter puffins may also eat crustaceans, but their preferred food is fish. The young puffins are usually fed fish by their parents.