日本海溝
Princaxelia jamiesoni is a species of amphipod crustacean described in 2010. The type material of "Princaxelia jamiesoni" was collected on September 30, 2008 from a depth of in the Japan Trench (). Further material was collected in 2009 from the Izu–Ogasawara Trench () at a depth of . It is named after Alan Jamieson, a marine biologist from the University of Aberdeen.