Here's some more specific info:
Britain, by signing a mutual defence treaty with Japan in 1902 gave Japan main responsibility for Far Eastern waters. Japan then declared war on the 23rd August 1914, partly with the aim of capturing the German base of Tsingtao on mainland China and occupying the German Marshall and Caroline Island groups in the Western Pacific. Tsingtao was besieged and taken on the 7th November 1914 by a largely Japanese naval and land force with a token Western Allied presence.
By then, the German island groups had been occupied by ships of the First Fleet. Japanese warships of the Third Fleet also helped escort ANZAC troopships across the Indian Ocean and others took part in the hunt for German light cruiser 'Emden' in the East Indies and Indian Ocean, and for Adm von Spees East Asiatic Squadron in the Pacific Ocean - the latter leading to the Battle of Coronel and ending with the Battle of the Falklands. Until 1917, the Navy stayed in the Far East, for example helping British forces to put down a mutiny in Singapore in February 1915. Then from April 1917, an eventual total of 14 destroyers with cruiser flagships were based at Malta playing an important and efficient part in anti-submarine convoy escort.
Most Japanese wartime losses apart from the Tsingtau operation, were due to accidents, but in the Mediterranean, one destroyer was torpedoed and badly damaged.
After the war, Japan joined the Allies in Far East operations against the Bolsheviks.