Grapus grapsus, frontal view.
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Sally lightfoot crab (Grapsus grapsus)
Cardisoma Crassum
Cardisoma crassum, ventral view.
Cardisoma crassum, ventral view.
Callicnectes Toxotes
Callicnetes toxotes, ventral view.
Callicnetes toxotes, ventral view.
Gecarcinus Cuadratus
Gecarcinus cuadratus, ventral view.
Gecarcinus cuadratus, ventral view.
Cardisoma Crassum
Cardisoma crassum, reproductive organ.
Cardisoma crassum, reproductive organ.
Sally lightfoot crab (Grapsus grapsus)
Two specimens of Grapus grapsus, dosal view and ventral view.
Two specimens of Grapus grapsus, dosal view and ventral view.
Gecarcinus Cuadratus
Gecarcinus cuadratus, frontal view.
Gecarcinus cuadratus, frontal view.
Gecarcinus Cuadratus
Gecarcinus cuadratus, dorsal view.
Gecarcinus cuadratus, dorsal view.
Pacific lamprey (Lampetra tridentata)
Larval Pacific lamprey collected from the upper Umatilla River in northeastern Oregon.
Larval Pacific lamprey collected from the upper Umatilla River in northeastern Oregon.
Cardisoma Crassum
Cardisoma crassum, frontal view.
Cardisoma crassum, frontal view.
Sally lightfoot crab (Grapsus grapsus)
Grapus grapsus, dorsal view.
Eurytium Tristani
Eurytium tristani, frontal view.
Eurytium tristani, frontal view.
Endangered California Condor
An endangered California condor flies over the Bitter Creek National Wildlife Refuge, California.
An endangered California condor flies over the Bitter Creek National Wildlife Refuge, California.
Torrey Pines State Reserve
Scenery of coastline from the Torrey Pines State Reserve.
Scenery of coastline from the Torrey Pines State Reserve.
Torrey Pines State Reserve
Scenic view of coastline at the Torrey Pines State Reserve.
Scenic view of coastline at the Torrey Pines State Reserve.
Torrey Pines State Reserve
Scenery from the Torrey Pines State Reserve.
Scenery from the Torrey Pines State Reserve.
Torrey Pine (Pinus torreyana)
Torrey Pine.
Crowberry
Crowberry plant with berries.
Crowberry plant with berries.
Black-Tailed Prairie Dog ( Cynomys ludovicianus )
Black-tailed prairie dog from the Prairie Dog Town colony at Buffalo Gap National Grasslands.
Black-tailed prairie dog from the Prairie Dog Town colony at Buffalo Gap National Grasslands.
Needle, Custer State Park
Sunset at The Needle, a geologic formation in Custer State Park.
Sunset at The Needle, a geologic formation in Custer State Park.
Surface sediment sampling in a vegetated Louisiana saltmarsh.
Surface sediment sampling in a vegetated Louisiana saltmarsh.USGS researchers Jennifer Agee and Le Kieu sampling surface sediment in a vegetated Louisiana saltmarsh. Photographer: M. Marvin-DiPasquale.
Surface sediment sampling in a vegetated Louisiana saltmarsh.
Surface sediment sampling in a vegetated Louisiana saltmarsh.USGS researchers Jennifer Agee and Le Kieu sampling surface sediment in a vegetated Louisiana saltmarsh. Photographer: M. Marvin-DiPasquale.