blending interest all that. >> reporter: one reason making finding the missing plane such a challenge. recently a chinese ship in search of the airplane came across trash -- trash instead. even sea life can't tell the difference. fish, sea lions, birds, they ingest this junk thinking it might be food. >> i heard about there being 300,000-police pusz in the aircraft. there are -- 300,000-plus pieces in the aircraft. there are more. >> there are two in the pacific and two in the atlantic. they form when ocean currents bounce off the continents and create a vortex of swirling water which pulls debris from the shores to the center of the ocean. the geyer is thought to be two million square miles. keep in mind, the entire united states is under four million square miles. and this garbage patch isn't just huge, it's on the move.