theseablog: The Remora
Ever seen a fish attached to a shark or a manta ray while they’re swimming about?
Well, these are Remoras. They have an organ on top of their head which allows them to attach to larger fish like sharks and rays to hitch rides and feed of its parasites and waste. Pretty cool adaption.
Posts tagged "ocean"
Fossil of Spiral Saw Tooth Structure of Helicoprion
There is some debate about the function and location within the body of this structure…
“The exact location of the tooth-whorl in the lower jaw is unknown. Most current reconstructions place the whorl in the front of the lower jaw; however this would create drag, making the shark a less efficient swimmer, and turbulence, alerting prey of its approach. An alternate reconstruction, created by Mary Parrish under the direction of Robert Purdy, Victor Springer and Matt Carrano for the Smithsonian, places the whorl deeper into the throat. This arrangement would be best suited for soft bodied prey…” (read more: Wikipedia)
(photo: Univ. of Maryland-Geology)Source rhamphotheca
A solitary stony coralSource benthos
larva of a conger eelSource ohscience
- Camera: Nikon SUPER COOLSCAN 5000 ED
The weird “spine and brush” structure on the back of this 375 million-year-old male Stethacanthus may have served as a sexual signaling device, making it easier for females to pick out potential mates, or was perhaps used in combat by males. Like many early sharks, Stethacanthus was only a few feet long.
(via rhamphotheca)Source karencarr.com
Expedition Helps Build Network of Ocean Sensors
A 274-foot research vessel — named Thomas G Thompson — has just completed a Visions ‘11expedition to aid the installation of a whole host of web-enabled sensors that will monitor the ocean in the Pacific Northwest.
The expedition was part of the installation of the Ocean Observatories Initiative’s (OOI) high-power and high-bandwidth cabled ocean observatory, funded by the National Science Foundation. Once in place, it will measure the physical, chemical, geological and biological fluctuations in the ocean and seafloor. [Read More]
Digitized Deep-Ocean Expedition Discovers Surprising Oasis of Life
Marine biologists have discovered a never-before-seen duo of organisms colonizing a deep-sea hydrothermal vent in the Atlantic Ocean.
The team discovered the unlikely duo of shrimp and tubeworms, neither of which can rely on sunlight at the bottom of the ocean to power a food chain below them. Instead, the creatures have evolved to harbor chemosynthetic bacteria that feed on rich nutrients that billow from hydrothermal vents. [Read More]
Ray “Acrobats” (Photo: Octavio Aburto)
Mobula (manta) rays, aka devil rays, perform acrobat-like jumps in Mexico’s Cabo Pulmo National Park.
Saturn’s icy moon may have an ocean
According to the Cassini orbiter, Saturn’s moon Enceladus may have an underground ocean of salty molten liquid. The moon shoots ice from geysers that burst from fissures in the moon as confirmed by Cassini, which swooped to within 21 kilometers of the surface. The icy geysers are responsible for Saturn’s E Rings.
Fiery Sea Slug Discovered That Lays Lacy Egg Cases
Pictured “knitting” a doily-like egg mass in a lab in 2008, a new species of fiery-colored nudibranch, or sea slug, has been found in shallow tide pools near a southern California campground, a new study says. Marine biologist Jeff Goddard stumbled across the carnivorous 1.2-inch (3-centimeter) creature—later dubbed Flabellina goddardi—while searching for another sea slug in Carpinteria State Park (map) in 2008. Not long afterward, in the lab, the hermaphroditic critter laid a lacy egg mass, which hatched into tiny, snail-like babies.
Sea slugs are often transparent—”you can see the gonads through the body,” for example—and Goddard knew the animal was expecting. The elaborate latticework of the egg mass is a “trick of arrangement” to make sure all the embryos get enough oxygen, he added. “That whole string is packed with thousands of egg capsules.”…
(read more: National Geo)Source rhamphotheca
The female is 40,000 times heavier than the male. The male is only 2.4 cms along and leads an almost planktonic lifestyle while the female is big, spectacular and over than 2 meters long.
When it feels threatened, the female can also extend a cape-like membrane between its arms that makes her look bigger and badder than she really is.
The blanket octopus is immune to the deadly Portuguese Man’O War “jellyfish;” as self defense, the clever octopus often tears off some Man’O War tentacles and uses them as a weapon.Source ohscience
The Florida Keys Reef - U.S. Marine Protected Area
The islands in the Florida Keys span 126 miles (200 kilometers) and are home to the most extensive living coral reef in the United States, and the third largest on Earth.
Just south of the Florida peninsula, the Florida Keys National Marine Sanctuary covers 3,708 square miles (9,600 square kilometers).
The region receives more than 4 million visitors a year who come to dive, explore coral reefs and shipwrecks, and fish.
Beyond tourism, the Keys support a nearly 20-million-pound (9-million-kilogram) harvest of seafood and marine products annually. In an effort to protect the ecological and commercial resources in the park, the area was designated a national sanctuary in 1990.
(Photograph by Emory Kristoff)
A curious erosional remnant of a shield volcano that formed about 7 million years ago. Balls Pyramid is 20 km southeast of Lord Howe Island in the Pacific Ocean. It is 562 m (1844 ft) high, while measuring only 1100 m (3600 ft) in length and 300 m (1000 ft) across, making it the tallest volcanic stack in the world.Source curious-cosmos