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Image: California Coast Seafloor
California Coast Seafloor
California Coast Seafloor
California Coast Seafloor

This photograph is of the seafloor off the California coast and shows rock outcrop, encrusting sponge, cup corals, red sea star and a female kelp greenling. This photograph supports the California Seafloor Mapping Program (CSMP), which was initiated in 2007 by the California Ocean Protection Council.

This photograph is of the seafloor off the California coast and shows rock outcrop, encrusting sponge, cup corals, red sea star and a female kelp greenling. This photograph supports the California Seafloor Mapping Program (CSMP), which was initiated in 2007 by the California Ocean Protection Council.

Seafloor photo with seastars
Photo of the seafloor off San Gregorio, California
Photo of the seafloor off San Gregorio, California
Photo of the seafloor off San Gregorio, California

Boulders and biota off San Gregorio, California, in water approximately 30 meters (100 feet) deep. Organisms include bat stars, small sea anemones, strawberry anemone, cup corals, and frilly sea cucumbers.

Image: Elk (Cervus elaphus)
Elk (Cervus elaphus)
Elk (Cervus elaphus)
Elk (Cervus elaphus)

Two bull elk fighting in a lake.

Image: Lake Chandler Acid Lake
Lake Chandler Acid Lake
Lake Chandler Acid Lake
Lake Chandler Acid Lake

Jeff Kargel (University of Arizona) Jim Crowley (USGS), Field trip to Australia to study acid lakes as Mars analogs.

Jeff Kargel (University of Arizona) Jim Crowley (USGS), Field trip to Australia to study acid lakes as Mars analogs.

Image: Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake

Jim Crowley (USGS) and Jeff Kargel (University of Arizona) studying acid lakes as mars analogs.

Jim Crowley (USGS) and Jeff Kargel (University of Arizona) studying acid lakes as mars analogs.

Image: Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake

Jim Crowley (USGS), Jeff Kargel (University of Arizona. Studying Earth as a Mars analog.

Jim Crowley (USGS), Jeff Kargel (University of Arizona. Studying Earth as a Mars analog.

Image: Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake

Jim Crowley (USGS), Nathan Bridges (JPL). Studying Earth as a Mars analog.

Jim Crowley (USGS), Nathan Bridges (JPL). Studying Earth as a Mars analog.

Image: Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake

Jim Crowley (USGS), Jeff Kargel (University of Arizona), Nathan Bridges (JPL). Studying Earth as a Mars analog.

Jim Crowley (USGS), Jeff Kargel (University of Arizona), Nathan Bridges (JPL). Studying Earth as a Mars analog.

Image: Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake
Lake Tyrrel. Acid Lake

Simon Hook (JPL), Jim Crowley (USGS), Nathan Bridges (JPL). Studying Earth as a Mars analog.

Simon Hook (JPL), Jim Crowley (USGS), Nathan Bridges (JPL). Studying Earth as a Mars analog.

Image: Tidewater Goby
Tidewater Goby
Tidewater Goby
Tidewater Goby

Tidewater goby collected from Rodeo Lagoon in Golden Gate National Recreation Area, CA.

Tidewater goby collected from Rodeo Lagoon in Golden Gate National Recreation Area, CA.

Image: Lake Chandler. Acid Lake
Lake Chandler. Acid Lake
Lake Chandler. Acid Lake
Lake Chandler. Acid Lake

Jim Crowley (USGS) measuring pH in the acid lake Chandler in Australia.

Image: Green Lake. Acid Lake
Green Lake. Acid Lake
Green Lake. Acid Lake
Green Lake. Acid Lake

Jim Crowley (USGS), Nathan Bridges (JPL). Field trip to Australia to study acid lakes as Mars analogs.

Jim Crowley (USGS), Nathan Bridges (JPL). Field trip to Australia to study acid lakes as Mars analogs.

Image: Karijini Circular Pool
Karijini Circular Pool
Karijini Circular Pool
Karijini Circular Pool

Searching for life on Mars using Mars analogs in Australia. Banded Iron Formation Hamersley Basin.

Searching for life on Mars using Mars analogs in Australia. Banded Iron Formation Hamersley Basin.

Image: Banded Iron Formation of Hamersley Range
Banded Iron Formation of Hamersley Range
Banded Iron Formation of Hamersley Range
Banded Iron Formation of Hamersley Range

Jim Crowley (USGS) searching for life on Mars using Mars analogs in Australia.

Image: Seastars on Algae Covered Cobbles and Boulders
Seastars on Algae Covered Cobbles and Boulders
Seastars on Algae Covered Cobbles and Boulders
Seastars on Algae Covered Cobbles and Boulders

Digital still photograph from Massachusetts Bay near Cohasset, MA, showing seastars (Asterias sp.), blood stars (Henricia sanguinolenta), blood drop tunicates (Dendrodoa carnea), mussels, and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae.  Water depth at this location is approximately 19.6 meters.

Digital still photograph from Massachusetts Bay near Cohasset, MA, showing seastars (Asterias sp.), blood stars (Henricia sanguinolenta), blood drop tunicates (Dendrodoa carnea), mussels, and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae.  Water depth at this location is approximately 19.6 meters.

Image: Massachusetts Seafloor
Massachusetts Seafloor
Massachusetts Seafloor
Massachusetts Seafloor

This photograph is of the seafloor off the Massachusetts coast and shows sea stars, blood stars, blood drop tunicates, mussels and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae.

This photograph is of the seafloor off the Massachusetts coast and shows sea stars, blood stars, blood drop tunicates, mussels and barnacles on cobbles and boulders covered with bubblegum algae and red filamentous algae.

Image: Massachusetts Seafloor
Massachusetts Seafloor
Massachusetts Seafloor
Massachusetts Seafloor

This photograph is of the seafloor off the Massachusetts coast and shows a lobster as well as boulders and sediment covered in seaweed, bubblegum algae and red filamentous algae.

This photograph is of the seafloor off the Massachusetts coast and shows a lobster as well as boulders and sediment covered in seaweed, bubblegum algae and red filamentous algae.

Image: Dawn of Life
Dawn of Life
Dawn of Life
Dawn of Life

3.5 billion years old stromatolites. Searching for life on Mars using Mars analogs in Australia.

3.5 billion years old stromatolites. Searching for life on Mars using Mars analogs in Australia.

Image: Marble Bar Chert Stained with Iron
Marble Bar Chert Stained with Iron
Marble Bar Chert Stained with Iron
Marble Bar Chert Stained with Iron

Jim Crowley (USGS) searching for life on Mars using Mars analogs in Australia.

Image: Ray Copper Mine
Ray Copper Mine
Ray Copper Mine
Ray Copper Mine

Production level in the Ray porphyry copper mine, AZ.

Production level in the Ray porphyry copper mine, AZ.

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