One species of these animals often has its eyes infected by the copepod (10[1])Ommatokoita (-5[1])elongata, (10[2])which might (-5[1])attract prey through bioluminescence. (-5[6])That species of these animals (10[1])contains toxic amounts (10[1])of (10[1])trimethylamine (10[3])N-oxide (10[2])and urea, (10[6])which allows it to live at great depths. (10[8]-5[2])This is the largest group of animals whose intestines contain a spiral valve to increase (-5[1])surface (-5[1])area (10[1])and a specialized liver full of squalene to maintain buoyancy. (10[2]-5[1])The cephalofoil (10[1]-5[1])shape of one of these animals’ heads (-5[1])is thought to (10[1])enhance (10[1])electroreception. (10[7]-5[3])A slow swimming (10[2]-5[2])“sleeper” (10[2])one of these (10[1])animals (-5[1])is named (-5[1])after Greenland. (10[4])For (10[2])10 (10[1])points, (10[4])name these predatory (10[4])cartilaginous fish that have great white (10[3])and hammerhead (10[1])varieties. (10[3])■END■ (10[12])