Complex sentence: In April 2010, an MPA (Marine protected area) was created in the BIOT that covers the territorial waters of the Chagos Archipelago, except for the area immediately surrounding Diego Garcia.
Split into simpler sentences: In April 2010, an MPA (Marine protected area) was created in the BIOT. It covers the territorial waters of the Chagos Archipelago, except for the area immediately surrounding Diego Garcia.