Virginia’s occurrence data logs 340 records of Tamanend’s bottlenose dolphin, a coastal Atlantic species only recently split out from the common bottlenose dolphin, and every one of those records comes from GBIF rather than a casual iNaturalist sighting.
Two very different Virginia waters
Records concentrate at Chincoteague, where barrier-island inlets and shelf waters off the Eastern Shore fit this species’ preference for shores and estuaries, and in the Chesapeake Bay itself, whose calmer, food-rich estuarine waters suit the sheltered feeding grounds a calf needs during the years it stays close to its mother. Those two settings, an ocean-facing inlet and an enclosed bay, both sit within the bays-estuaries-shelf mix this dolphin uses along the whole Atlantic coast.
A name change complicates the record
Researchers only split Tamanend’s bottlenose dolphin from the common bottlenose dolphin recently, so older Virginia reports logged simply as “bottlenose dolphin” don’t always sort cleanly into this species’ occurrence count. The 340 records here likely undercount how long these dolphins have actually used Virginia’s coast and bay.
Records spike in winter
Recorded sightings jump sharply in January before settling into a steadier rate through the rest of the year, a pattern that’s more likely tied to when researchers and stranding networks are out looking than to the dolphins’ own movements.
Status in Virginia
The dolphin isn’t listed as nonindigenous in Virginia by USGS NAS and is treated as native to its mapped Virginia range.
