Today's Catch

Sep 13, 2013
Credit:

Joe Shlabotnik , Flickr

An estimated 1.8 billion people will suffer from water scarcity by 2025. Looking for sources of water is becoming important and with oceans containing around 97% of Earth’s water, it would be nice if we could make use of its bounty. The ocean is incredibly salty because the natural erosion of rocks washes salts into the ocean, where they dissolve into the seawater. Humans are very sensitive to...Read more
Sep 12, 2013
If you think only men can helm research vessels to get their hands dirty and study ocean currents, you're wrong. This short film follows the mostly-female scientists of the R/V Knorr research ship on an expedition to the Agulhas Current in the Indian Ocean. The Agulhas Current is the Indian Ocean's version of the Gulf Stream: originating in the tropics, both currents sprint along the coast...Read more
Sep 11, 2013
Credit:

Kmusser, Wikimedia Commons

If you want to explore the depths of the ocean, you may want to go to the deepest part: the Mariana Trench. This trench has a maximum depth of 11 kilometers (around 7 miles) and is almost five times wider than it is deep. The Mariana Trench is deeper than Mount Everest is tall and anything living there has to survive the cold water and extremely high pressure. Some animals, including the deep-sea...Read more
Sep 10, 2013
Credit:

canopic, Flickr

Weighing 600 pounds (around 272kg) and having a 30 foot (around 9 meters) arm span, the largest recorded giant pacific octopus was truly enormous. Giant pacific octopuses are powerful predators that are able to eat anything from shrimps and lobsters to birds and likely small sharks. They are also incredibly smart, and can solve mazes and imitate other species of octopus. The giant pacific octopus...Read more
Sep 9, 2013
Credit:

João Pedro Silva, Flickr

The corkwing wrasse, or gilt-head, changes color depending on its age, sex, and breeding season. For instance, during the breeding season, males have blue spotted fins and the middle of their scales gain bright blue and green pigment. In order to breed, males build nests made out of seaweed in rocks and crevices. The breeding season is made more complex due to occasional sex reversal, meaning the...Read more
Sep 6, 2013
Credit:

Taveuni Palms Resort, Flickr

Two large coral trout ( Plectropomus leopardus ) swim through a coral reef on Taveuni Island in Fiji. Coral trout are highly desired fish for human consumption, and because of overfishing, are considered near threatened by the IUCN red list . However, their populations recover when communities create no-take marine reserves. Because no fishing is allowed in the reserves, coral trout are able to...Read more
Sep 5, 2013
Credit:

Fco. Javier Gallardo Álvarez, Flickr

The mauve stinger’s ( Pelagia noctiluca ) name in German means “night light,” referring to the jelly’s reddish coloring and its bioluminescence, the display of light by a living creature. Unlike a night-light, however, this jellyfish can become startled and leave a trail of glowing mucous behind. Scientists now have an incentive to follow that trail, since the mauve stinger’s bioluminescence can...Read more
Sep 4, 2013
Credit:

Doug Nowacek/Duke University

This radio device is used to track North Atlantic right whales. Suction cups hold the device to a whale's back, where it records data such as depth, water, temperature, and underwater sounds. These tags can be used on many species of whales, including blue whales and humpbacks , and other versions have been used to study many other ocean animals . Read more about right whales in the Tale of a...Read more
Sep 3, 2013
Credit:

sean.sheldrake, Flickr

Diving to survey, sample, and manage marine life takes a great deal of skill and knowledge. This diver is sampling the seafloor, also known as the benthic zone. This kind of sampling is important for mapping and can allow scientists to draw conclusions about animal habitats and distributions. For this to work, divers must collect many samples for the data. They can use a wide variety of tools...Read more
Aug 30, 2013
How do we know what coral reefs looked like hundreds of years ago? Often times, we are simply left wondering. Scientists can get an idea from naturalist recordings, but there are many unknowns and they are relying on interpreting personal observations. The landscape of coral reefs has certainly changed since 1846, when Joseph Jukes recorded his impressions of the Great Barrier Reef, and there is...Read more

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