<Tr> <Th> </Th> <Th> species </Th> <Th> mercury (mean ppm) </Th> <Th> omega - 3 (mean percent) </Th> <Th> habitat </Th> <Th> notes </Th> <Th> trophic level </Th> <Th> max age (years) </Th> </Tr> <Tr> <Td> </Td> <Td> Tilefish </Td> <Td> 1.450 </Td> <Td> 1.06 </Td> <Td> pelagic </Td> <Td> </Td> <Td> 3.6 </Td> <Td> 35 </Td> </Tr> <Tr> <Td> </Td> <Td> Swordfish </Td> <Td> 0.995 </Td> <Td> 1.14 </Td> <Td> pelagic </Td> <Td> </Td> <Td> 4.5 </Td> <Td> 15 </Td> </Tr> <Tr> <Td> </Td> <Td> Shark </Td> <Td> 0.979 </Td> <Td> 0.98 </Td> <Td> pelagic </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr>

Who eats the most fish in the world