Original sentence: Its first known use was in 1988: marine biologist Bert Webber from Bellingham, Washington, proposed that US and Canadian authorities officially apply this name to what its proponents describe as a large, dilute, estuarial inland sea but is really a series of interconnected straits, sounds and inlets focussed on Puget Sound, the Strait of Georgia,  and adjoining waterbodies, plus the Strait of Juan de Fuca which connects the Georgia-Puget Basin to the Pacific Ocean
Edited sentence: Its first known use was in 1988: marine biologist Bert Webber from Bellingham, Washington, proposed that U.and Canadian authorities officially apply this name to what its proponents describe as a large, dilute, estuarial inland sea but is really a series of interconnected straits, sounds and inlets focussed on Puget Sound, the Strait of Georgia,  and adjoining waterbodies, plus the Strait of Juan de Fuca which connects the Georgia-Puget Basin to the Pacific Ocean