
The Mississippi River is an adventure hotspot, but it’s also home to many animals and insects you wouldn’t want to bump into! Some can bite, sting, or suck your blood! To keep your trip safe and fun, here are ten creatures to avoid at the Mississippi River.
Alligator-Snapping Turtle

Don’t go anywhere near this ancient-looking turtle. Alligator-snapping turtles have very strong jaws that can break bones. These dangerous creatures often sit still, waiting for their prey. If you see one, admire it from afar—those jaws can even sever human fingers.
Bull Shark

Believe it or not, there ARE a few bull sharks in the Mississippi River! Though rare, these aggressive sharks can travel far inland. Even though it’s unlikely to find one, be alert if you’re in deep waters. Their attack can cause severe injuries.
Mosquitoes

Mosquitos along the waters can make you fall ill. Tiny but dangerous, they can carry diseases like the West Nile virus, meningitis, and flaccid paralysis. Always carry a bug spray near the river and cover your skin to protect yourself from these flying insects.
Cottonmouth Snake (Water Moccasin)

The cottonmouth is one of the few venomous snakes you might encounter by the river. They get aggressive and can bite if you intimidate them. In case you spot one swimming or sunning itself on the shore, just back away slowly and give it space.
Northern Water Snake

If you see a snake floating in the water, back off. While non-venomous, the northern water snake can still be a problem. People often mistake them for cottonmouths, but Northern Water Snakes can attack if you corner them. Their bite isn’t fatal, but it can hurt a lot.
Leech

Leeches are common in murky waters. They silently latch onto your skin and suck blood. If you’re swimming or wading, check yourself after for any clingy leeches. They may not do much harm, but still, they are annoying and painful!
Deer Tick

You’ll find deer ticks in the tall grasses at the river. They are tiny but can cause big problems. The sneaky little ticks can cause bacterial and parasitic infections like Lyme disease. So, wear long pants and inspect yourself for ticks after hiking or exploring the area.
American Alligator

Alligators can move fast on land and in water. They roam parts of the river, especially in the southern regions. While these big reptiles rarely attack, you should keep your distance if you see one, especially if you’re near their nests.
Fire Ants

Fire ants may seem harmless, but their bites sting like crazy and can cause allergic reactions. They build nests near the riverbanks, so be careful where you step or sit. These little guys can swarm quickly if you disturb their home, so watch out.
Biting Flies

Biting flies along the Mississippi River are relentless! They attack both people and animals, leaving itchy, painful bites. Some can even cause lesions and river blindness, so you should wear protective clothing and avoid areas where biting flies are common—especially during the warmer months.