An endangered green sea turtle is released into the Mosquito Lagoon. Original from NASA. Digitally enhanced by rawpixel. Free Image from public domain license 
Clark University student Christie Wood lowers a water sampler into a borehole on July 4, 2010. Original from NASA. Digitally… Free Image from public domain license 
d from Oorlogsschip een schot lossend (1759) by Cornelis Ploos van Amstel. Original from The Rijksmuseum. Digitally enhanced… Free Image from public domain license 
Group of Tubularis Indivisa (1884) by Eduard Oscar Schmidt, an unusual aquatic life form. Digitally enhanced from our own… Free Image from public domain license 
Lone Cypress on the 17-Mile Drive. 17-Mile Drive is a scenic road through Pacific Grove and Pebble Beach on the Monterey… Free Image from public domain license 
Survey of the Mir Space Station.
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Dartmouth College's Chris Polashenski cuts a block of ice from below a melt pond on sea ice in the Chukchi Sea on July 9… Free Image from public domain license 
Connecticut River. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally enhanced… Free Image from public domain license 
The X-band radar array is installed on the solid rocket booster retrieval ship Liberty before launch of Space Shuttle… Free Image from public domain license 
Benny Hopson from the Barrow Arctic Science Consortium in Alaska drills a core sample from sea ice in the Chukchi Sea on July… Free Image from public domain license 
Molluscs of the Northern Seas from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Starfish varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Starfish varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Shrimp varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Octopus illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco (1848–1922).… Free Image from public domain license 
Starfish varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Sea urchin illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco (1848–1922).… Free Image from public domain license 
Starfish varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Whiplash squid illustration from Deutschen Tiefsee-Expedition (German Deep Sea Expedition) (1898–1899) by Carl Chun.… Free Image from public domain license 
West African Brachyuran crab, Bathynectes piperitus vintage illustration from Résultats des Campagnes Scientifiques by… Free Image from public domain license 
Shrimp varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Amphipods of the North Atlantic from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Pacific Coast view in Santa Cruz, California. Original image from Carol M. Highsmith’s America. Digitally enhanced by… Free Image from public domain license 
Old Fisherman's Wharf was constructed before the turn of the century. The Wharf was purchased by the City of Monterey in 1913… Free Image from public domain license 
Rising from fire and smoke, NASA's Juno planetary probe, enclosed in its payload fairing, launches atop a United Launch… Free Image from public domain license 
Molluscs of the Northern Seas from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Clam shell varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Starfish varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Gorgonocephalus arcticus, a basket star illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of… Free Image from public domain license 
Special black squid illlustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Starfish varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Brisingidae starfish illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Snail varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Sea snail varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Alloposus mollis, a seven arm octopus illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of… Free Image from public domain license 
Marine life Bathypolypus octopus illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899)… Free Image from public domain license 
Sperosoma grimaldii, a sea urchin illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of… Free Image from public domain license 
Clam shell varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Squid varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Abraliopsis morisii, bioluminescent squid illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition… Free Image from public domain license 
Snail varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Twaalf schelpen van diverse slakkensoorten (1705) by Jacob de Later, after Maria Sibylla Merian. Original from The… Free Image from public domain license 
Red octopus and an argonaut illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity… Free Image from public domain license 
Illustration of a Cirrothauma murrayi octopus from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899)… Free Image from public domain license 
Starfish varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Strange marine life illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899) by Carl… Free Image from public domain license 
Various genera of squids illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899) by Carl… Free Image from public domain license 
Sea snail varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Sea squirt varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Vintage bolitaena octopus illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899) by… Free Image from public domain license 
Squid varieties set illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899) by Carl… Free Image from public domain license 
Shrimp varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Cirrate octopus and a vampire squid illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition… Free Image from public domain license 
Bobtail squid illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899) by Carl Chun.… Free Image from public domain license 
Octopus mimus, a gould octopus illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity… Free Image from public domain license 
Sea snail and sea slug varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from… Free Image from public domain license 
Vintage bolitaena octopus illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899) by… Free Image from public domain license 
Octopus varieties set illustration from Deutschen Tiefsee-Expedition (German Deep Sea Expedition) (1898–1899) by Carl… Free Image from public domain license 
Common Sydney octopus and octopus furva illustration from Mollusca & Shells by Augustus Addison Gould. Original from… Free Image from public domain license 
Shrimps' external and internal organs illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of… Free Image from public domain license 
Squid varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Illustration of a shrimp's external and internal organs from Résultats des Campagnes Scientifiques by Albert I, Prince… Free Image from public domain license 
Cirrate octopus illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899) by Carl Chun.… Free Image from public domain license 
Decapod varieties set illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco… Free Image from public domain license 
Snail varieties set illustration from Mollusca & Shells by Augustus Addison Gould. Original from Biodiversity Heritage… Free Image from public domain license 
Cirrate octopus illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899) by Carl Chun.… Free Image from public domain license 
Sea spider illustration from Résultats des Campagnes Scientifiques by Albert I, Prince of Monaco (1848–1922).… Free Image from public domain license 
Benthoteuthis megalops Verrill squid illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition… Free Image from public domain license 
Aquatic creature from Real Sailor-Songs. Collected and Edited by J. Ashton. Two Hundred Illustrations published by Leadenhall… Free Image from public domain license 
50. & 51. Atlantic horseshoe crab (Polyphemus occidentalis) illustration from Zoology of New York (1842–1844) by James… Free Image from public domain license 
Eddystone lighthouse from All Among The Lighthouses, Or The Cruise Of The Goldenrod published by D. Lothrop & Co. (1886).… Free Image from public domain license