Media Gallery: Photos Oldest

  • 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....
  • Since 1987, researchers have been tracking Phoenix.

    Meet Phoenix—One of about 450 remaining North Atlantic Right Whales
    Jan 26 2010 - 11:45am
    Since 1987, researchers have been tracking Phoenix. More about whales can be found in our Tale of a whale featured story.
  • 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...
  • A manatee swimming in shallow waters.

    Manatees
    Jan 26 2010 - 11:45am
    A manatee swimming in shallow waters. The West Indian manatee is listed on the IUCN's Red List of Threatened Species as Vulnerable. More about mangroves can be found in our Mangroves featured story.

  • Dwarf Cup Coral
    Jan 26 2010 - 11:45am

  • About Ocean Portal
    Jan 26 2010 - 11:45am
  • Whales are identifiable by their distinct pattern of callosities.

    Whale Callosities
    Jan 26 2010 - 11:45am
    Every North Atlantic right whale has a pattern of callosities unique to that individual. This distinctive pattern provides a very visual, convenient tool that researchers can use to tell one...
  • A Great White Shark hunted and killed.

    Dead Great White Shark
    Jan 26 2010 - 11:45am
    By-catch, illegal fishing, sport fishing, loss of prey and habitat and shark nets are threatening Great White Shark (Carcharodon carcharias) populations globally. More about the great white shark can...
  • Thalassinidean Shrimp

    Thalassinidean Shrimp
    Jan 26 2010 - 11:45am
    Thalassinidean shrimp (Thalassinidea) build complex burrows deep in the mud. More about mangroves ecosystem can be found in our Mangroves featured story.
  • Photograph of a green sea slug, with white polka-dot-like markings and white-edged ruffly structures along the length of its back.

    Lettuce Sea Slug
    Jan 26 2010 - 11:45am
    The lettuce sea slug (Elysia crispata) has enlarged fleshy appendages that are folded over one another, with colors ranging from blue to green, with purple and red lining. The green coloring is what...
  • A scorpian in a mangrove ecosystem.

    Scorpion in a Mangrove
    Jan 26 2010 - 11:45am
    A scorpion found in a mangrove. More about mangrove ecosystem can be found in our Mangroves featured story.
  • Macroscopic Algae (Acetabularia crenulata)

    Macroscopic Algae (Acetabularia crenulata)
    Jan 26 2010 - 11:45am
    Macroscopic Algae (Acetabularia crenulata). More about mangrove ecosystems can be found in the Mangroves section.