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Chesapeake Bay News

Aug
04
2010

Are there sharks in the Chesapeake Bay?

As the heat of summer continues, people in the Chesapeake Bay region are spending more and more time on and in the water, which often leads to one of the biggest questions and concerns about safety in the Bay: Are there sharks in the Bay?

The answer to the question is yes, there are. In fact, there are at least 12 species of sharks found in the Bay. Some are quite abundant, while others are very rare. Whether you need to be concerned about shark attacks while swimming or boating is another story though.

Danger to humans

The sharks that are found in the Bay rarely pose a threat to human safety, but as with any wild creature, you’ll want to be cautious. Sharks may be cool to look at, but the best option for their safety and yours is to leave them alone.

As of 2004, the Maryland Department of Natural Resources had not recorded any shark attacks in the Chesapeake Bay or in any of Maryland’s waters. The International Shark Attack File records no unprovoked shark attacks in the state of Maryland and only five in the state of Virginia, none of which occurred in the Chesapeake.

The Chesapeake’s most common sharks

There are five species of sharks that are common to abundant in the Chesapeake Bay. Be on the lookout for these species during the summer and fall, and make yourself aware of the risks associated with each of them. Some are considered more dangerous than others, but most will not cause any problems as long as you do not provoke them.

Sandbar shark


The most common shark found in the Chesapeake is the sandbar shark (Carcharhinus plumbeus). The sandbar shark can be found in the Atlantic Ocean from Massachusetts all the way to southern Brazil, and is a seasonal visitor to the Chesapeake Bay in the summer and fall.

Juvenile sandbar sharks are common to abundant in the Bay during this time of year. In fact, the Bay is one of the most important nursery areas on the East Coast for young sandbar sharks. But don’t worry about a sandbar shark attack – it typically preys on bottom fishes, other sharks, rays and invertebrates. The Bay’s blue crabs are a particular favorite of the sandbar shark.

Image credit: NOAA

Bull shark

Image credit: NOAA

The bull shark (Carcharhinus leucas) is a close cousin of the sandbar shark, but is more aggressive. The bull shark is an occasional summer visitor to the Chesapeake Bay, reaching as far north as the Patuxent River. It feeds on bony fishes, rays and other sharks (particularly juvenile sandbar sharks), in addition to crustaceans, turtles and mammals.

Many shark attacks have been attributed to bull sharks, since their behavioral habits bring them in close proximity to humans. While bull sharks are considered to be one of the three most dangerous shark species, they are not a significant threat to human safety in the Chesapeake Bay.

Sand tiger shark

The sand tiger shark (Odontapis taurus) is a common visitor to the lower Bay during the summer and fall. It is most often found along the Bay’s bottom and is active at night. It feeds mostly on small fishes, squids and other sharks. It is the primary predator of sandbar sharks near the Bay’s mouth.

The sand tiger looks dangerous because of its size (up to 10 feet long) and jagged teeth, but there have been no recorded attacks on humans. However, as with any shark, it is recommended that humans do not provoke sand tiger sharks.

Smooth dogfish

The smooth dogfish (Mustelus canis) is a common to abundant visitor to the Chesapeake Bay in the summer and fall. The smooth dogfish is only found in coastal areas of the western Atlantic, from Massachusetts to Venezuela and then from southern Brazil to Argentina. It is especially common in the lower Bay, as far north as the Patuxent River, in waters less than 60 feet deep. It is an active swimmer and feeds on large crustaceans and crabs at the Bay’s bottom. Smooth dogfish usually travel in schools or packs.


Image credit: NOAA

Spiny dogfish

Image credit: NOAA

The spiny dogfish (Squalus acanthias) is commonly found in the lower Bay south of the Potomac River in late fall through early spring. Like the smooth dogfish, it often travels in schools, but it is a much slower swimmer and inhabits deeper waters. The spiny dogfish is found in temperate coastal waters of all seas and oceans in the world.

Occasional to infrequent visitors to the Bay

There are four more species of sharks that are occasional to rare visitors to the Chesapeake Bay. The more frequent of these are the basking shark and the bonnethead.

Basking shark

The basking shark (Cetorhinus maximus) is an early spring visitor to the Chesapeake Bay. The basking shark, often observed swimming and feeding at the water’s surface, occasionally ventures from its normal coastal habitat into large bays like the Chesapeake. Most of these sightings are reported as being of one to three individuals, although there have been reports of hundreds of them at once.

Bonnethead

The bonnethead (Sphyrna tiburo) is an occasional summer visitor to the lower Chesapeake Bay. It mostly inhabits waters that are between 30-80 feet deep. Bonnetheads are more common in southern waters and often seen in groups of dozens, but are less common in the Chesapeake.

More rarely found in the Bay are the smooth hammerhead and the Atlantic angel shark. The smooth hammerhead (Sphyrna zygaena) is a rare to occasional summer or fall visitor, found as far north as the mouth of the Choptank River. The Atlantic angel shark (Squatina dumeril) is another summer and fall visitor in the lower Bay that is very rarely found farther north in the Bay.

Infrequent and rare visitors

Even less frequently observed in the Bay are the scalloped hammerhead, the Atlantic sharpnose shark and the dusky shark. The scalloped hammerhead (Sphyrna lewini) rarely enters the Bay at all, but there have been a few records of it at the mouth. The Atlantic sharpnose (Rhizopriondon terraenovae) is a rare visitor to the lower Bay only. And the dusky shark (Carcharhinus obscrurus) used to be fairly common in the Chesapeake, but is now just an infrequent visitor to the lower Bay in the summer months.

There are several other shark that have been seen in the Bay before, but may not ever be found here again. For the most part, these sharks have a single record on file as being spotted in the Chesapeake.

The nurse shark (Ginglymostoma cirratum) was seen in the lower Chesapeake in 1877 and has not been spotted since. It is more common in tropical and subtropical waters as well as along the eastern Pacific and West African coasts.

The lemon shark (Negaprion brevirostris) and the blacktip shark (Carcharhinus limbatus) are common along the Eastern Shore in coastal lagoons and along Atlantic beaches. The lemon shark was found once near Fisherman Island in 1981, and the blacktip was collected there in 1980.

The tiger shark (Galeocerdo cuvier) is a rare visitor to the lower Bay, with a single record of it at Smith Island shoal at the mouth of the Bay.

Overall, sharks aren’t a major safety concern in the Chesapeake Bay. The lower Bay’s role as a nursery area for sandbar sharks makes it the most abundant large shark population on the Atlantic coast. But populations of other shark species are limited in this area, so unprovoked attacks are incredibly rare.

Still, next time you’re out on the Bay, be on the lookout for some of these shark species for a little bit of a science lesson. Although they aren’t as abundant or as culturally or economically valuable as many of the Bay’s other species, they are still an important part of the Bay’s ecosystem.

For more information about sharks in the Chesapeake Bay, check out:


Keywords: Sharks

Comments:

Comment

David Galland says:
June 09, 2012

I grew up in Poquoson, Va.from 1976-1984 and had the honor of seeing most of the listed species of sharks in your article. My grandfather Crosby C. Forrest had a restaurant at the end of Messick Rd. Not only was he a restaurant owner, he was also a true blooded waterman thru and thru. He is gone (R.I.P. Cros) and so is his restaurant, but some of the best times of my life were spent out on the water with him in the James River/Chesapeake. Bay fishing, drinking, and observing the various wonders the ocean has to offer. I will tell you though, we had seen sandtigers 12-14 feet long no further than 12 miles from shore. Let me tell you, it’s quite the feeling to see a tigershark 14 ft.long when you’re along side it in a 20 ft.boat!



Comment

BLACK ADDER says:
July 06, 2012

Sharks are making a comeback, as seine and long lined commercial fishing is more closely regulated. I,too, have seen all of these species, especially within ten miles of the beach. To my knowledge, there is no longer a Va.Beach Sharkers Club, but if someone could find records of THAT group from the 60’s and 70’s, you would be amazed at the local catches.
BA



Comment

hannah parks says:
August 16, 2012

Hi I’m 10 years old and I’m very interested in sharks this information was very helpful so I want to say thank you and I hope I may learn more about sharks



Comment

Sean K. says:
November 03, 2013

I was fishing on the Cape this summer and I saw what had to be a ten foot 300+ pound shark, probably a big sand tiger or bull, rise and show its dorsal fin and back. The exposed part of the back alone was around 4 feet long. And I know it wasn’t a dolphin because of the shape of the dorsal and color of the skin.



Comment

Michael King says:
November 27, 2013

People should stay out of the water when there has been a shark sighting. The ocean belongs to the sharks; we should not be swimming in their ocean if we want to be safe. Just a thought.



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