Chesapeake Bay
Maryland has offered an optional "Chesapeake Bay" license plate since 1991.
Version 1 - Blue Heron with "Treasure the Chesapeake"
Version 2 - In 2004, the design was changed, moving the heron to the left side of the plate, keeping the text as "Treasure the Chesapeake"
Version 3 - In 2018, the plate was fully redesigned, and now features a crab, along with the Chesapeake Bay Bridge. The text was also changed to "Protect the Chesapeake". This 2018 design won the "Best Plate of 2018" by the Automobile License Plate Collectors' Association.
Version 4 - This 2024 change keeps the graphic identical, however the text has been changed to "Protect the Chesapeake & Coastal Bays".