In the deep sea off the coast of Brazil, researchers dropped cow bones to the seafloor, then discovered a new species. Abdullah Ali via Unsplash What happens when the ocean’s giants die?

In 2016 and 2017, researchers dropped cow bones into the deep sea off the coast of Brazil at depths of about 1,800, 4,900 and 10,800 feet, according to the study. The research team expected to ...