Sharks of Onslow County
North Carolina’s coastline is home to a surprisingly rich and dynamic marine ecosystem — and sharks are among its most vital (and misunderstood) residents. In Onslow County, from the inlets around Sneads Ferry to the open waters off Topsail Island, over a dozen species of sharks migrate, feed, or even give birth throughout the year.
But which sharks are here, and when? Let’s dive in.
The waters off Onslow County are part of a critical marine highway where warm Gulf Stream currents mix with nutrient-rich coastal waters. This convergence creates a perfect buffet for migrating predators like sharks, especially in spring through early fall.
The area also includes estuaries, inlets, and sandbars — ideal habitats for young sharks and mothers giving birth. Some species pass through, while others stay for an entire season.
| Season | Common Shark Species | Notes |
| Spring (March-May) | Blacktip, spinner, Atlantic sharpnose | Blacktips often arrive first. Spinner sharks can be seen leaping nearshore. |
| Summer (June-August) | Sandbar, bull, dusky, hammerhead, tiger | High diversity and activity. Shark pupping peaks in estuarine waters. |
| Fall (September-November) | Blacktip, scalloped hammerhead, sand tiger | Juveniles migrate out, adults fatten up before heading south. |
| Winter (December-February) | Occasional Sandbar or Atlantic sping dogfish | Most large sharks migrate south or deeper offshore. |
Sharks in Onslow County are not aggressive toward humans and play a crucial role in ocean health. Most sightings are brief and harmless. That said, avoid swimming near fishing piers or schools of baitfish, especially at dawn or dusk, and between fishers casting from the shore..
Understanding seasonal shark activity helps:
Have you seen a shark or need help with identification? You can report sightings or photos by posting or emailing me with your questions and to support my independent research. Follow our Instagram and Facebook pages to stay informed, ask questions, or learn how to participate in future citizen science efforts.
