Media Gallery: Photos To www.arcodiv.org

  • Picture of an American Crocodile resting underwater.

    American Crocodile
    Jan 26 2010 - 11:45am
    An American crocodile, Crocodylus acutus, resting on a bed of seagrass. These medium-sized crocodiles live in freshwater and saltwater habitats of Central America, the northern coasts of South...
  • Illustration of two ammonites, with coiled shells and many tentacles.

    Ammonite
    Jan 26 2010 - 11:45am
    Like the modern nautilus, this relative of modern squid hunted from inside the safe haven of a protective shell. Ammonites went extinct around the same time as the dinosaurs—65 million years ago....
  • Several species of amphipods acclimate to different water salinities using osmoregulation

    Amphipod Under Arctic Sea Ice
    Jan 6 2011 - 3:36pm
    Several species of amphipod like this one, Gammarus wilkitzkii, live permanently within Arctic sea ice. These animals are endemic, meaning they only live here. They acclimate to a wide range of salt...
  • An amphipod surrounded by her eggs, in the barrel of a salp.

    Amphipod: Salp Invader
    Sep 7 2012 - 4:35pm
    Can you spot the amphipod (Phronima atlantica) in the below photo? She's the transparent lobster-looking animal in the middle, surrounded by her own eggs -- inside a sac that once was the "barrel" of...
  • Dr. Amy Baco-Taylor dives to deep-sea environments to study corals and the invertebrates that live on them.

    Amy Baco-Taylor, Deep-Sea Coral Scientist
    Jul 27 2011 - 10:44am
    Dr. Amy Baco-Taylor dives to deep-sea environments to study corals and the invertebrates that live in them.
  • A Smithsonian scientist points to an ancient whale fossil

    An Ancient Whale Skeleton, Unexcavated
    May 7 2012 - 3:54pm
    Nick Pyenson, the curator of fossil marine mammals at the Smithsonian's National Museum of Natural History, points to the skull and skeleton of a fossil "toothed" mysticete (baleen whale) on the West...
  • Invasive brittlestars scattered on coral in Brazil.

    An Invasive Brittlestar
    Sep 7 2012 - 8:54am
    These brittlestars (Ophiothela mirabilis) are not where they belong. These animals, usually found in the Pacific Ocean, were first spotted in the Atlantic Ocean off the coast of Brazil in 2000. And...
  • Entoprocts, small, sessile, tentacled animals, lived 520 million year ago (and are still around today).

    Ancient Entoproct Community
    Jan 18 2013 - 10:28am
    For a long time, scientists thought that some small tentacled fossils were early ancestors of jellyfish. But a new study has found that these ancient animals are actually related to an entirely...
  • Illustration of the extinct shark Carcharodon megalodon.

    Ancient Great White Shark
    Jan 26 2010 - 11:45am
    A scientific illustration of the most powerful fish of its time, Carcharodon megalodon, which swam the ocean 30 million years ago.  This shark may have reached a size of 20 meters/66 feet....
  • A researcher holds a maritime archaic point made of ramah chert that was found at Hare Harbor in Quebec, Canada in 2011

    Ancient Maritime Archaic Indian Point
    Sep 9 2011 - 6:05pm
    Smithsonian surveys along the lower north shore of Hare Harbor in Quebec, Canada have revealed evidence of a long history of Native American occupation, beginning with the Maritime Archaic Indian...
  • Ancient sea cow vertebra found in the Gatun Formation in Central America, Panama

    Ancient Sea Cow Vertebra
    Jun 18 2011 - 10:06am
    A fossil vertebra that a Smithsonian researcher's mother found while prospecting in the Gatun Formation. It's not just any vertebra, it belongs to a fossil sea cow! According to Jorge Valez-Juarbe, a...
  • Two bright orange anemonefish poke their heads between anemone tentacles.

    Anemonefish in their Host Anemone
    Jul 9 2012 - 9:33am
    Two bright orange anemonefish (Amphiprion ocellaris) poke their heads between anemone tentacles. Anemonefish are able to swim amongst the stinging tentacles without getting stung -- but no one knows...