
Two Charleston-area cities rank in America’s top 5 for dolphin sightings – Isle of Palms at #2 and Folly Beach at #4
BoatBooker analyzed bottlenose dolphin sighting data from OBIS-SEAMAP, a peer-reviewed scientific database maintained by Duke University’s Marine Geospatial Ecology Lab in partnership with NOAA. Across 356 US coastal locations and 243,809 documented dolphins, Isle of Palms ranked #2 nationally with 16,588 dolphins documented across 2,446 sighting events, and Folly Beachranked #4 with 14,443 dolphins documented across 3,161 sighting events.
The Atlantic Intracoastal Waterway and the open ocean converge around Isle of Palms, creating productive feeding grounds for resident dolphin pods. Further south, the Folly River and its surrounding salt marshes serve as nursery grounds for dolphin calves – making Folly Beach especially active in summer. Together, the two cities confirm the Charleston coast as one of the most dolphin-rich stretches of water in the entire US.
“Having two cities from the same metro area in America’s top 5 for dolphin sightings is a remarkable result,” said Vukan Simic, CEO of BoatBooker. “The Charleston coast is clearly one of the most dolphin-rich stretches of water in the US, and the data from NOAA and Duke University backs that up convincingly.”
The top 10 US locations for dolphin watching, according to NOAA and Duke University data:
1. Buxton, NC – 20,128 dolphins
2. Isle of Palms, SC – 16,588 dolphins
3. Virginia Beach, VA – 15,429 dolphins
4. Folly Beach, SC – 14,443 dolphins
5. Nags Head, NC – 13,292 dolphins
6. Holmes Beach, FL – 9,902 dolphins
7. Montauk, NY – 9,120 dolphins
8. Chincoteague, VA – 8,972 dolphins
9. Harkers Island, NC – 8,340 dolphins
10. Nantucket, MA – 6,624 dolphins
The full ranking, methodology, and complete list of 356 US coastal locations are available here.

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