Exploring a deep-sea ridge off Northern California, scientists at the Monterey Bay Aquarium Research Institute (MBARI) have discovered a unique undersea nursery, where groups of fish and octopus brood their eggs, like chickens on their nests. This is the first time that marine biologists have directly observed any deep-sea fish brooding its eggs. It is also the first time that two different types of mobile deep-sea animals have been observed brooding together in the same area. Although the scientists do not know exactly why the animals prefer this one area, they believe that the nursery represents a new type of biological “hot spot” (an area of intense biological activity).
A blob sculpin (Psychrolutes phrictus) peers over the edge of a boulder at the ROV Tiburon. This fish is guarding its eggs (which you can see in the background) along the Gorda Escarpment, off Northern California. Blob sculpin commonly grow to 60 cm (2 feet) in length. The animals on the rock are brisingid sea stars (with the feathery arms) and sea anemones. Image (c) 2002 MBARI
Three octopus (Graneledone sp.) brood their eggs on a rock outcrop along the Mendocino Escarpment, offshore of Northern California. The octopus are in a typical brooding position, with their heads down and arms curled outward. Their eggs are hidden underneath their bodies, which are about 16 cm (6 inches) across. Also on the rock are a deep-sea crab and several types of sea anemones. This photograph suggests some of the abundance and diversity of marine life found around the undersea nursery areas along the Gorda Escarpment off Northern California. Image (c) 2002 MBARI
MBARI scientist Jeff Drazen presented these observations last week at the Deep Sea Biology Symposium in Coos Bay, Oregon. His research is also featured in the current (August 2003) issue of Biological Bulletin, which shows photographs of the brooding fish and octopus on its cover.
The undersea nursery was discovered and documented using MBARI’s remotely operated vehicle (ROV) Tiburon. Using video tapes from Tiburon dives, Drazen and colleagues found that each summer, blob sculpin (Psychrolutes phrictus) and deep-sea octopus (Graneledone sp.) gather together at the crest of the Gorda Escarpment, off Northern California.
Debbie Meyer | MBARI
Stingless bees have their nests protected by soldiers
24.02.2017 | Johannes Gutenberg-Universität Mainz
Antimicrobial substances identified in Komodo dragon blood
23.02.2017 | American Chemical Society
In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
24.02.2017 | Earth Sciences
24.02.2017 | Agricultural and Forestry Science
24.02.2017 | Life Sciences