Japan Trench is an oceanic trench, a part of the Pacific Ring of Fire, in the floor of
the northern Pacific
Ocean off northeast Japan.
from the Kuril
Islands to the Bonin Islands and is at its deepest. It is an extension of
Trench to the north and the Izu-Ogasawara
Trench to its south.
This trench is created when
the oceanic Pacific plate
beneath the continental Eurasian
. The subduction process, together with the friction
created 'drags' the plates downwards, causing a deep-sea trench to
be formed. The Japan Trench is one of the causes of the
tsunamis and earthquakes in Japan.
On 11 August 1989
the Shinkai 6500
three-person submersible descended
to .) while exploring the Japan Trench.
In October 2008, a UK-Japan team discovered a shoal of fish,
at a depth of in the trench, these are
believed to be the deepest living fish ever recorded.