Types of Octopus in Mississippi
Mississippi's coastal waters host a few octopus species, most commonly the Atlantic octopus (Octopus vulgaris) and the dwarf octopus (Octopus mercatoris). These intelligent mollusks are most often spotted near reefs, jetties, and oyster beds. Start your search in the Mississippi Sound or around the barrier islands for the best odds.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 7, 2026.
Mississippi has one main kind of octopus. Below are the related species here that people most often mistake for it.
- 1
- species recorded
- January, December
- peak months
Real sighting data, source iNaturalist
Only 3 verified observations on iNaturalist of octopus have been logged in Mississippi, which fits how rare they are in the state. That low number is itself the most honest answer to whether you are likely to see one here.
Mississippi's coastal waters host a few octopus species, most commonly the Atlantic octopus (Octopus vulgaris) and the dwarf octopus (Octopus mercatoris). These intelligent mollusks are most often spotted near reefs, jetties, and oyster beds. Start your search in the Mississippi Sound or around the barrier islands for the best odds.
1. What are the most common octopus species in Mississippi?
Two species dominate Mississippi waters: the Atlantic octopus (*Octopus vulgaris*) and the dwarf octopus (*Octopus mercatoris*). The Atlantic octopus grows larger (up to 3 feet arm span) and is found around artificial reefs and submerged structures. The dwarf octopus stays small (under 6 inches) and hides inside empty shells or crevices in oyster reefs. A third species, the Caribbean reef octopus (*Octopus briareus*), occasionally drifts in from the Gulf but is less common in Mississippi.
2. How can you tell the main octopus types apart without a guide?
Focus on size and skin texture. The Atlantic octopus is heavy-bodied with a mottled gray-brown color and two large eyespots (ocelli) on each side of its head. The dwarf octopus is much smaller, pale beige with tiny orange spots, and tends to curl its arms tightly when disturbed. The Caribbean reef octopus is bright blue-green with a warty skin and distinct white spots. If you see one at night with a glowing blue ring, it is not a native species stay back.
3. Where and when are you most likely to notice each type?
Atlantic octopuses are most often seen by divers near the artificial reefs off Hancock and Jackson Counties, especially in summer and fall. Dwarf octopuses are easier to spot during low tide around oyster reefs in the Mississippi Sound, particularly around Gulfport and Biloxi. Caribbean reef octopuses are rare but turn up after strong southeast winds push warm Gulf water into the barrier island passes. Timing: octopuses are nocturnal, so your best odds come from night wading or diving with a red light.
4. What habitats should you check for octopus in Mississippi?
Start with the Mississippi Sound's hard-bottom areas. Look for octopus dens under rocks, inside discarded crab traps, or among creosote pilings. The shallow grass flats around Horn Island produce dwarf octopus scat (small shell piles). For Atlantic octopus, target the deeper wrecks and reef balls 15 to 30 feet down. Avoid muddy bottoms octopuses prefer structure. Check out ouroctopus animal hubfor more on den identification.
See ourstate animal guidefor the next step.
5. Are there any rare or seasonal octopus visitors?
Yes. The common blanket octopus (*Tremoctopus violaceus*) has been reported off the coast after hurricane passages, with females showing a striking purple mantle. The Atlantic longarm octopus (*Octopus defilippi*) sometimes appears in shrimp trawl bycatch. Neither is likely to be seen by casual beachcombers. For a full species breakdown, visit ourMississippi wildlife page.
6. How do you identify an octopus den in Mississippi waters?
Look for a small opening (2-4 inches) under a rock or shell, surrounded by a debris ring of crab legs, clam shells, and broken oyster shells. Active dens have a single narrow entrance often plugged with a piece of shell or a scallop. The species can sometimes be narrowed by the size of the entrance: larger holes (4+ inches) often belong to Atlantic octopus. See ouroctopus types pagefor a visual comparison.
7. What gear helps you spot octopus in the wild?
A good dive light with a red filter is key because octopuses are shy of white light. Wear a dive skin or wetsuit to stay comfortable during late-night wading. A waterproof field notebook helps you log den locations and size estimates. For beginners, a snorkel and mask in the grass flats is enough to start. Once you have a sighting, you might want to commemorate it with theOctopus Kraken T-Shirt- a fun way to share your find. Also check ourtote bag collectionfor a carry-all for beach excursions.
Reading Octopus, tea, coffee and books gift T-Shirt Bubble-free stickers
A strong match for this wildlife page and an easy next click after the guide.Check Price and Availability
Octopus As Student T-Shirt with A Backpack and Apple
A strong match for this wildlife page and an easy next click after the guide.Check Price and Availability
8. Can you keep an octopus as a pet in Mississippi?
Technically yes, but it is not recommended for beginners. The dwarf octopus is sometimes collected for home aquariums, but they are escape artists with a short lifespan (12-18 months). If you want to try, source only from local suppliers who collect sustainably. For most people, spotting them in the wild is more rewarding. Consider theReading Octopus Stickerfor your gear instead.
9. What should you do if you find an octopus on the beach?
Do not touch it. Octopuses can give a painful bite with venom that may cause swelling. If it appears stranded, gently push it back into the water using a stick or shell, or call the Mississippi Department of Marine Resources. Document the sighting with photos (from a safe distance) and note the species and location. For more local wildlife news, browseMississippi wildlife.
See ourtour planning ideasfor the next step.
Frequently asked questions
1. What are the most common octopus species in Mississippi?+
Two species dominate Mississippi waters: the Atlantic octopus (*Octopus vulgaris*) and the dwarf octopus (*Octopus mercatoris*). The Atlantic octopus grows larger (up to 3 feet arm span) and is found around artificial reefs and submerged structures. The dwarf octopus stays small (under 6 inches) and hides inside empty shells or crevices in oyster reefs. A third species, the Caribbean reef octopus (*Octopus briareus*), occasionally drifts in from the Gulf but is less common in Mississippi.
2. How can you tell the main octopus types apart without a guide?+
Focus on size and skin texture. The Atlantic octopus is heavy-bodied with a mottled gray-brown color and two large eyespots (ocelli) on each side of its head. The dwarf octopus is much smaller, pale beige with tiny orange spots, and tends to curl its arms tightly when disturbed. The Caribbean reef octopus is bright blue-green with a warty skin and distinct white spots. If you see one at night with a glowing blue ring, it is not a native species stay back.
3. Where and when are you most likely to notice each type?+
Atlantic octopuses are most often seen by divers near the artificial reefs off Hancock and Jackson Counties, especially in summer and fall. Dwarf octopuses are easier to spot during low tide around oyster reefs in the Mississippi Sound, particularly around Gulfport and Biloxi. Caribbean reef octopuses are rare but turn up after strong southeast winds push warm Gulf water into the barrier island passes. Timing: octopuses are nocturnal, so your best odds come from night wading or diving with a red light.
4. What habitats should you check for octopus in Mississippi?+
Start with the Mississippi Sound's hard-bottom areas. Look for octopus dens under rocks, inside discarded crab traps, or among creosote pilings. The shallow grass flats around Horn Island produce dwarf octopus scat (small shell piles). For Atlantic octopus, target the deeper wrecks and reef balls 15 to 30 feet down. Avoid muddy bottoms octopuses prefer structure. Check out ouroctopus animal hubfor more on den identification. See ourstate animal guidefor the next step.
5. Are there any rare or seasonal octopus visitors?+
Yes. The common blanket octopus (*Tremoctopus violaceus*) has been reported off the coast after hurricane passages, with females showing a striking purple mantle. The Atlantic longarm octopus (*Octopus defilippi*) sometimes appears in shrimp trawl bycatch. Neither is likely to be seen by casual beachcombers. For a full species breakdown, visit ourMississippi wildlife page.
6. How do you identify an octopus den in Mississippi waters?+
Look for a small opening (2-4 inches) under a rock or shell, surrounded by a debris ring of crab legs, clam shells, and broken oyster shells. Active dens have a single narrow entrance often plugged with a piece of shell or a scallop. The species can sometimes be narrowed by the size of the entrance: larger holes (4+ inches) often belong to Atlantic octopus. See ouroctopus types pagefor a visual comparison.
7. What gear helps you spot octopus in the wild?+
A good dive light with a red filter is key because octopuses are shy of white light. Wear a dive skin or wetsuit to stay comfortable during late-night wading. A waterproof field notebook helps you log den locations and size estimates. For beginners, a snorkel and mask in the grass flats is enough to start. Once you have a sighting, you might want to commemorate it with theOctopus Kraken T-Shirt- a fun way to share your find. Also check ourtote bag collectionfor a carry-all for beach excursions. ### Reading Octopus, tea, coffee and books gift T-Shirt Bubble-free stickers A strong match for this wildlife page and an easy next click after the guide.Check Price and Availability ### Octopus As Student T-Shirt with A Backpack and Apple A strong match for this wildlife page and an easy next click after the guide.Check Price and Availability
8. Can you keep an octopus as a pet in Mississippi?+
Technically yes, but it is not recommended for beginners. The dwarf octopus is sometimes collected for home aquariums, but they are escape artists with a short lifespan (12-18 months). If you want to try, source only from local suppliers who collect sustainably. For most people, spotting them in the wild is more rewarding. Consider theReading Octopus Stickerfor your gear instead.
9. What should you do if you find an octopus on the beach?+
Do not touch it. Octopuses can give a painful bite with venom that may cause swelling. If it appears stranded, gently push it back into the water using a stick or shell, or call the Mississippi Department of Marine Resources. Document the sighting with photos (from a safe distance) and note the species and location. For more local wildlife news, browseMississippi wildlife. See ourtour planning ideasfor the next step.
Keep exploring
More places to see octopus
More wildlife in Mississippi