One species of these animals often has its eyes infected by the copepod Ommatokoita elongata, which might attract prey through bioluminescence. (-5[1])That species of these animals contains toxic amounts of (10[1])trimethylamine N-oxide and urea, which allows it to live at great depths. This is the largest group of animals whose intestines contain a spiral valve to increase surface area and a specialized liver full of squalene to maintain buoyancy. (10[1])The cephalofoil shape of one of these animals’ heads is thought to enhance electroreception. (10[1])A slow swimming (-5[1])“sleeper” (10[1])one of these animals is named after Greenland. (10[1])For 10 points, (10[1])name these predatory (10[1])cartilaginous fish that have great white and hammerhead varieties. ■END■ (10[1])