A grey 10m long whale swam into an industrial part of Tokyo Bay in
early May, causing much surprise. Only 12 sightings of the mammal
have been confirmed around Japan since the 1960s. It is rare for
grey whales to be sighted in Japan, much less in the capital's
congested waterways a spokesman said. Grey whales travel about
20,000 km during their annual migrations between the sea off the
coast of Vietnam to Russia's far eastern Sakhalin Island.