1. It is a coincidental image anomaly based on the channel depths in the Chesapeake Bay, or atmospheric conditions interfering with satellite optics. No - too dull a theory, far too believable, and not worthy of a good marketing campaign.

2. It is a ploy by Google to devalue the Chesapeake Bay, thus being able to purchase it from Maryland and Virginia at a discount to further their advertising revenue. Hmmm - I kinda like that!

3 A promotion of real environmental concerns on the effect of oxygen-depleated "dead zones" in the Chesapeake Bay using a toxic-green skull.  Well, the dead zone supported by facts and needs to be addressed, but I don't think that this is the reason for the map image.

4. If you look at the WHOLE picture it is a "seahorse." Please visit the Calvert Marine Museum in Southern Maryland to view Chesapeake Bay seahorses and other wonders of the Chesapeake Bay.

5. The artist Cristo is at it again. No - I think he's dead (hmmm...how ironic)

6. It is a cheap promotion for the Chesapeake Bay Market, with free classified ads and online shopping. YES!