Assateague Island National Seashore

National park beaches and OSV zones south of the state park. Wilder strands, more room, and the classic Assateague pony photo with responsible distance.

Wildlife viewing guide for Ocean City, Maryland · 109 Nature Guide species linked to this area

Assateague Island National Seashore — Ocean City, Maryland
Photo via Wikipedia / Wikimedia Commons — Assateague Island National Seashore

Quick facts

Place typeParks & islands
Ease for visitors★★★★☆
Best forFull barrier-island wildlife: horses, sika, shorebirds, dolphins, maritime forest, and bay marsh.
Seasonsyear-round, peak migration, summer nesting
Habitats coveredAssateague National Seashore; Ocean beach & surf; Primary dunes; Salt marsh; Maritime forest; Nearshore / offshore ocean
AccessNational Park Service entrance south of the state park; beaches, trails, and bay side access.
ParkingNPS lots (entrance fee). Overflow on peak summer weekends.
FeesAssateague Island National Seashore entrance fee (federal passes accepted).
Location Assateague Island — south of Ocean City, MD
Managed by National Park Service
Habitat mix Beach, dunes, forest, marsh, nearshore ocean
Signature wildlife Horses, sika, fox, shorebirds, dolphins
Ease for visitors Easy beach lots; trails need sturdy shoes
Visitor center Stop for closure updates and maps
Pair with State park, Sinepuxent overlooks, OC Beach

About Assateague Island National Seashore

Assateague Island National Seashore is the premier wild counterpart to Ocean City’s groomed beach—miles of undeveloped oceanfront, dunes, maritime forest, and Sinepuxent Bay marsh managed by the National Park Service.

Use this page’s species checklist to plan targets, then confirm seasonal closures at the visitor center. Never approach horses or nesting birds. Ocean City lodging plus an Assateague day trip is a classic Maryland Eastern Shore wildlife itinerary.

When to go — seasonal activity

Relative wildlife-viewing activity at Assateague Island National Seashore by season (1–5 scale)

Best overall diversity in spring and fall; summer is excellent but hotter with more nesting closures.

What you might see

  • Wild horses, sika deer, and red fox
  • Piping plover and tern nesting areas (respect closures)
  • Dolphins offshore from beach overlooks
  • Ghost crabs and large whelk shells on ocean beach
  • Songbird waves in maritime forest trails

Best times

  • Early morning year-round for wildlife and parking
  • Fall weekdays for fewer crowds and migrant birds
  • Winter for quiet beach walks and waterfowl

Species you may see at Assateague Island National Seashore

These Nature Guide profiles match habitats linked to Assateague Island National Seashore around Ocean City, Maryland. Likelihood stars reflect how often visitors can reasonably expect the species nearby—not a guarantee for any single outing.

Species counts by group

Group Species linked Share of checklist
Birds 25
23%
Mammals 14
13%
Reptiles & amphibians 12
11%
Crustaceans 10
9%
Mollusks 12
11%
Other marine invertebrates 12
11%
Insects & arachnids 12
11%
Coastal plants 12
11%
Total 109

Birds (25)

Full directory: Birds around Ocean City

Species Likelihood Seasons
Boat-tailed Grackle
Quiscalus major
★★★★★ year-round
Double-crested Cormorant
Nannopterum auritum
★★★★★ year-round, migration
Great Blue Heron
Ardea herodias
★★★★★ year-round
Great Egret
Ardea alba
★★★★★ spring, summer, fall
Laughing Gull
Leucophaeus atricilla
★★★★★ spring, summer, fall
Osprey
Pandion haliaetus
★★★★★ spring, summer, fall, breeding
Red-winged Blackbird
Agelaius phoeniceus
★★★★★ spring, summer, breeding
Sanderling
Calidris alba
★★★★★ migration, winter, spring, fall
Willet
Tringa semipalmata
★★★★★ spring, summer, breeding, fall
American Oystercatcher
Haematopus palliatus
★★★★ ☆ year-round, breeding
Brant
Branta bernicla
★★★★ ☆ winter, fall, spring
Brown Pelican
Pelecanus occidentalis
★★★★ ☆ summer, fall, spring
Northern Gannet
Morus bassanus
★★★★ ☆ winter, fall, spring
Northern Harrier
Circus hudsonius
★★★★ ☆ winter, fall, spring
Royal Tern
Thalasseus maximus
★★★★ ☆ spring, summer, fall
Ruddy Turnstone
Arenaria interpres
★★★★ ☆ migration, spring, fall, winter
Snowy Egret
Egretta thula
★★★★ ☆ spring, summer, fall
Yellow-rumped Warbler
Setophaga coronata
★★★★ ☆ winter, fall, spring
Bald Eagle
Haliaeetus leucocephalus
★★★ ☆☆ year-round, winter
Black Skimmer
Rynchops niger
★★★ ☆☆ summer, breeding, fall
Clapper Rail
Rallus crepitans
★★★ ☆☆ year-round, summer
Least Tern
Sternula antillarum
★★★ ☆☆ summer, breeding
Piping Plover
Charadrius melodus
★★★ ☆☆ spring, summer, breeding
Northern Saw-whet Owl
Aegolius acadicus
★★ ☆☆☆ winter
Peregrine Falcon
Falco peregrinus
★★ ☆☆☆ migration, fall, spring, winter

Mammals (14)

Full directory: Mammals around Ocean City

Species Likelihood Seasons
Assateague Horse
Equus caballus
★★★★★ year-round
Common Bottlenose Dolphin
Tursiops truncatus
★★★★★ spring, summer, fall
Eastern Cottontail
Sylvilagus floridanus
★★★★ ☆ year-round
Raccoon
Procyon lotor
★★★★ ☆ year-round
Sika Deer
Cervus nippon
★★★★ ☆ year-round
White-tailed Deer
Odocoileus virginianus
★★★★ ☆ year-round
Little Brown Bat
Myotis lucifugus
★★★ ☆☆ spring, summer, fall
Meadow Vole
Microtus pennsylvanicus
★★★ ☆☆ year-round
Muskrat
Ondatra zibethicus
★★★ ☆☆ year-round
Red Fox
Vulpes vulpes
★★★ ☆☆ year-round
Virginia Opossum
Didelphis virginiana
★★★ ☆☆ year-round
Harbor Seal
Phoca vitulina
★★ ☆☆☆ winter, spring
Humpback Whale
Megaptera novaeangliae
★★ ☆☆☆ winter, spring, fall
North American River Otter
Lontra canadensis
★★ ☆☆☆ year-round

Reptiles & amphibians (12)

Full directory: Reptiles & amphibians around Ocean City

Species Likelihood Seasons
Northern Diamondback Terrapin
Malaclemys terrapin terrapin
★★★★ ☆ spring, summer, fall
Eastern Box Turtle
Terrapene carolina
★★★ ☆☆ spring, summer, fall
Eastern Ratsnake
Pantherophis alleghaniensis
★★★ ☆☆ spring, summer, fall
Fowler's Toad
Anaxyrus fowleri
★★★ ☆☆ spring, summer
Green Treefrog
Hyla cinerea
★★★ ☆☆ spring, summer
Northern Watersnake
Nerodia sipedon
★★★ ☆☆ spring, summer, fall
Southern Leopard Frog
Lithobates sphenocephalus
★★★ ☆☆ spring, summer, fall
Eastern Fence Lizard
Sceloporus undulatus
★★ ☆☆☆ spring, summer, fall
Eastern Hognose Snake
Heterodon platirhinos
★★ ☆☆☆ spring, summer, fall
Loggerhead Sea Turtle
Caretta caretta
★★ ☆☆☆ summer, nesting, fall
Green Sea Turtle
Chelonia mydas
★ ☆☆☆☆ summer, fall
Kemp's Ridley Sea Turtle
Lepidochelys kempii
★ ☆☆☆☆ summer, fall

Crustaceans (10)

Full directory: Crustaceans around Ocean City

Species Likelihood Seasons
Atlantic Ghost Crab
Ocypode quadrata
★★★★★ spring, summer, fall
Atlantic Marsh Fiddler Crab
Minuca pugnax
★★★★★ spring, summer, fall
Atlantic Mole Crab
Emerita talpoida
★★★★★ spring, summer, fall
Blue Crab
Callinectes sapidus
★★★★★ spring, summer, fall
Atlantic Horseshoe Crab
Limulus polyphemus
★★★★ ☆ spring, summer, migration
Brown Shrimp
Farfantepenaeus aztecus
★★★ ☆☆ spring, summer, fall
White Shrimp
Litopenaeus setiferus
★★★ ☆☆ summer, fall
American Lobster
Homarus americanus
★★ ☆☆☆ year-round
Jonah Crab
Cancer borealis
★★ ☆☆☆ year-round
Mantis Shrimp
Squilla empusa
★★ ☆☆☆ spring, summer, fall

Mollusks (12)

Full directory: Mollusks around Ocean City

Species Likelihood Seasons
Coquina Clam
Donax variabilis
★★★★★ spring, summer, fall
Eastern Oyster
Crassostrea virginica
★★★★★ year-round
Hard Clam
Mercenaria mercenaria
★★★★★ year-round
Atlantic Surfclam
Spisula solidissima
★★★★ ☆ year-round
Blue Mussel
Mytilus edulis
★★★★ ☆ year-round
Channeled Whelk
Busycotypus canaliculatus
★★★★ ☆ year-round
Knobbed Whelk
Busycon carica
★★★★ ☆ year-round
Northern Moon Snail
Neverita duplicata
★★★★ ☆ year-round
Soft-shell Clam
Mya arenaria
★★★★ ☆ year-round
Atlantic Razor Clam
Ensis leei
★★★ ☆☆ year-round
Atlantic Sea Scallop
Placopecten magellanicus
★★★ ☆☆ year-round
Longfin Squid
Doryteuthis pealeii
★★★ ☆☆ spring, summer, fall, migration

Other marine invertebrates (12)

Full directory: Other marine invertebrates around Ocean City

Species Likelihood Seasons
Atlantic Sea Nettle
Chrysaora chesapeakei
★★★★★ summer, fall
Moon Jelly
Aurelia aurita
★★★★★ spring, summer, fall
Cannonball Jellyfish
Stomolophus meleagris
★★★★ ☆ summer, fall
Clam Worm
Alitta succinea
★★★★ ☆ year-round
Five-holed Sand Dollar
Mellita quinquiesperforata
★★★★ ☆ year-round
Sea Walnut
Mnemiopsis leidyi
★★★★ ☆ spring, summer, fall
Atlantic Purple Sea Urchin
Arbacia punctulata
★★★ ☆☆ year-round
Forbes' Sea Star
Asterias forbesi
★★★ ☆☆ year-round
Orange-striped Anemone
Diadumene lineata
★★★ ☆☆ year-round
Red Beard Sponge
Clathria prolifera
★★★ ☆☆ year-round
Sea Pansy
Renilla reniformis
★★★ ☆☆ summer, fall
Portuguese Man o' War
Physalia physalis
★★ ☆☆☆ summer, fall

Insects & arachnids (12)

Full directory: Insects & arachnids around Ocean City

Species Likelihood Seasons
Common Green Darner
Anax junius
★★★★★ spring, summer, fall, migration
Eastern Saltmarsh Mosquito
Aedes sollicitans
★★★★★ spring, summer, fall
Monarch
Danaus plexippus
★★★★★ spring, summer, fall, migration
American Dog Tick
Dermacentor variabilis
★★★★ ☆ spring, summer, fall
Black and Yellow Garden Spider
Argiope aurantia
★★★★ ☆ summer, fall
Blacklegged Tick
Ixodes scapularis
★★★★ ☆ spring, summer, fall
Eastern Carpenter Bee
Xylocopa virginica
★★★★ ☆ spring, summer, fall
Eastern Tiger Swallowtail
Papilio glaucus
★★★★ ☆ spring, summer, fall
Greenhead Fly
Tabanus nigrovittatus
★★★★ ☆ summer
Painted Lady
Vanessa cardui
★★★★ ☆ spring, summer, fall, migration
Carolina Wolf Spider
Hogna carolinensis
★★★ ☆☆ spring, summer, fall
Mourning Cloak
Nymphalis antiopa
★★★ ☆☆ spring, fall, winter

Coastal plants (12)

Full directory: Coastal plants around Ocean City

Species Likelihood Seasons
American Beachgrass
Ammophila breviligulata
★★★★★ year-round
Sea Lettuce
Ulva lactuca
★★★★★ spring, summer, fall
Smooth Cordgrass
Sporobolus alterniflorus
★★★★★ year-round
Eelgrass
Zostera marina
★★★★ ☆ spring, summer, fall
Glasswort
Salicornia
★★★★ ☆ spring, summer, fall
Loblolly Pine
Pinus taeda
★★★★ ☆ year-round
Marsh Elder
Iva frutescens
★★★★ ☆ year-round
Northern Bayberry
Morella pensylvanica
★★★★ ☆ year-round
Rockweed
Fucus vesiculosus
★★★★ ☆ year-round
Sea Rocket
Cakile edentula
★★★★ ☆ spring, summer, fall
Southern Wax Myrtle
Morella cerifera
★★★★ ☆ year-round
Dusty Miller
Jacobaea maritima
★★★ ☆☆ spring, summer, fall

Assateague Island National Seashore FAQs

Common questions for visitors planning wildlife time near Ocean City, Maryland.

Ocean City vs Assateague for wildlife—where should I go?
Ocean City Beach is convenient for gulls, sanderlings, and casual dolphin sightings. Assateague National Seashore is better for horses, sika deer, nesting shorebirds, and wilder habitats. Ideal trips include both.
Where are piping plovers protected?
Posted ocean beach and dune nesting areas—especially in spring and summer. Stay out of fenced zones and keep dogs leashed where allowed at all.
Can I see dolphins from Assateague beaches?
Yes, bottlenose dolphins often cruise outside the breakers. Morning light and calm seas help. For closer encounters, consider a responsible wildlife charter from West Ocean City.
Are there venomous snakes I should worry about?
Assateague has snakes; give all snakes space. Stay on trails, watch hands/feet in brush, and do not attempt to handle wildlife. Check herp guides on this site for local species profiles.