American toad
American toad (Anaxyrus americanus). Stroud Preserve, Chester County, PA.
American toad (Anaxyrus americanus). Swarthmore, Pennsylvania.
American toad (Anaxyrus americanus). Binky Lee Preserve, Chester Springs, PA.
Western dusky slug
Western dusky slug (Arion subfuscus) feeding near patch of alcoholic flux. Mohonk Mountain House, New Paltz, NY.
Western dusky slug (Arion subfuscus) grazing on a burnt-orange bolete (Tylopilus ballouii). Rose Tree Park, Media, PA.
Western dusky slug (Arion subfuscus) grazing on stinging nettle (Urtica dioica). Crum Woods, Swarthmore, PA.
Common pill woodlouse
Common pill woodlouse (Armadillidium vulgare) with yellow spots. Mohonk Mountain House.
Wandering broadhead planarian
Wandering broadhead planarian (Bipalium adventitium) on mullein leaf. Swarthmore, PA.
Wandering broadhead planarian (Bipalium adventitium). Swarthmore, PA.
Three-lined land planarium
Three-lined land planarium (Bipalium pennsylvanicum). Hildacy Preserve, Media, PA.
Galapagos slate pencil urchin
Spines from Galapagos slate pencil urchin (Eucidaris galapagensis) on beach. Isla Fernandina, Galapagos.
Gammarus fasciatus
Group of Gammarus fasciatus deposited on streambank by flooding. Hildacy Preserve, Media, PA.
Sally Lightfoot crab
Sally Lightfoot crab (Grapsus grapsus) eating another Sally Lightfoot crab. Fernandina Island, Galápagos Islands.
Sally Lightfoot crab (Grapsus grapsus). Fernandina Island, Galápagos Islands.
Sally Lightfoot crab (Grapsus grapsus). Isla Santa Cruz, Galápagos.
Tree frog
Either a Cope's gray treefrog (Hyla chrysoscelis) or eastern gray treefrog (Hyla versicolor). Need chromosome count or call to distinguish. Cape May Point, PA.
Diamond stingray
Diamond stingray (Hypanus dipterurus). Off San Cristobal, Galapagos.
Galápagos humpback scorpionfish
Galápagos humpback scorpionfish (Idiastion hageyi) on beach. Isla Rabida, Galápagos.
Brown sea cucumber
Brown sea cucumber (Isostichopus fuscus) with red cardinal fish. Off Isla Genovesa, Galápagos.
Harvestman (Leiobunum sp.) molting
Harvestman (Leiobunum sp.) molting. Mohonk Mountain House, New Paltz, NY.
Green frog under a leaf
Green frog (Lithobates clamitans) on bank of small pond. Mohonk Mountain House, New Paltz, NY.
American bullfrog
American bullfrog (Lithobates catesbeianus). Mohonk Mountain House, New Paltz, NY.
American bullfrogs
American bullfrog (Lithobates catesbeianus) waiting for dinner in Chinatown. Philadelphia, PA.
Wood frog
Wood frog (Lithobates sylvaticus). Formerly Rana sylvatica. Hildacy Farm Preserve, Media, Pennsylvania.
Wood frog eggs
Wood frog (Lithobates sylvaticus) eggs. Hildacy Preserve, Media, PA.
Common earthworms
Common earthworms (Lumbricus terrestris) mating. Swarthmore, PA.
Changeable mantleslug
Changeable mantlesglug (Megapallifera mutabilis) on lichen. Mohonk Mountain House, New Paltz, NY.
Changeable mantleslug (Megapallifera mutabilis) eating lichen .
Slender phlox
Slender phlox (Microsteris gracilis) growing inside mountain lion paw print. Crooked River National Grassland, Madras, OR.
American giant millipede
American giant millipede (Narceus americanus complex). Kaaterskill Falls, Hunter, NY.
Red-spotted newt
Red-spotted newt (Notophthalmus viridescens viridescens). Mohonk Mountain House, New Paltz, NY.
Harvestman
Newly-molted harvestman (Opiliones). Mt. Cuba Center, Delaware.
Cuban tree frog
Cuban tree frog (Osteopilus septentrionalis). Zolfo Springs, FL.
Juvenile Cuban tree frog (Osteopilus septentrionalis) on lemongrass. Zolfo Springs, FL.
Juvenile Cuban tree frog (Osteopilus septentrionalis). Zolfo Springs, FL.
American bullfrog (Lithobates catesbeianus). Clayton Park, Monmouth County, NJ.
Panamic cushion star
Panamic cushion star (Pentaceraster cumingi). Great Darwin Bay, San Cristobal, Galapagos.
Panamic cushion stars
Panamic cushion stars (Pentaceraster cumingi). Great Darwin Bay, Isla Genovesa, Galápagos.
Blue seastar
Blue seastar (Phataria unifascialis). Great Darwin Bay, Isla Genovesa, Galápagos.
Eastern red-backed salamander
Eastern red-backed salamander (Plethodon cinereus). Unionville Serpentine Barren, Unionville, PA.
Eastern red-backed salamander (Plethodon cinereus). Wayne County, PA.
Island applesnail eggs
Eggs of island applesnail (Pomacea maculata). Myakka River State Park, Sarasota, FL.
Wandering broadhead planarian (<i>Bipalium adventitium</i>). Swarthmore, PA.
