The bay is shallow and warms up quickly. The NOAA buoy at Tolchester Beach says the water up there is above 70F now.
There are a fair number north of the bridge on this 5 day old sightings map from Chesapeake Dolphin Watch. The one up by Pikesville was probably misplaced but I think most of the others are credible.
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u/Massive_University66 23h ago
That's awesome! What part of the Bay though?