In accordance with the internationally-recommended practice, imports and exports statistics have
been adjusted to include as imports fish caught by foreign fishing vessels and landed in domestic
ports and as exports fish caught by domestic fishing vessels and landed directly in foreign ports.
World totals of major groups of species may be understated due to statistics being reported as
unspecified fish in some national trade statistics. This results also in imbalances between figures
for world imports and exports of given major groups.