Loner simply swiped at the bubbles with his left pectoral fin for the sheer pleasure of dispersing them. The behavior floored her, although a part of her knew it shouldn’t. Mantas had a brain-to-body ratio far higher than most fish, as high as many mammals. A giant oceanic manta ray brain was the largest and heaviest of any animal that breathed water. The telencephalon and cerebellum—parts of the brain devoted in mammals to higher functioning—were enormous.
