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The Blog Aquatic

News, opinions, photos and facts from Ocean Conservancy

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Ocean Acidification Wrecks Sharks’ Smellovision

Posted On August 20, 2014 by

Scarier than any movie shark that can smell a drop of blood miles away (they can’t, by the way) is this week’s news about sharks’ sense of smell. A team of Australian and American scientists has just shown that smooth dogfishes (also called dusky smooth-hound sharks) can’t smell food as well after living in ocean acidification conditions expected for the year 2100. These “future” sharks could correctly track food smells only 15% of the time, compared to a 60% accuracy rate for unexposed sharks.  In fact, the acidification-exposed sharks even avoided food smells!

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How Do We Restore the Gulf Beyond the Shore?

Posted On August 18, 2014 by

In the wake of the BP Deepwater Horizon oil disaster, everyone’s talking about how we restore the Gulf Coast. But the Gulf of Mexico is more than what we can see from the shoreline. If we restore the coast without restoring the deep waters, we’re only addressing half the problem.

That’s why Ocean Conservancy has created Restoring the Gulf Beyond the Shore. It’s a short guide to the wildlife that lives in the Gulf’s waters and it explains why it is so important that we ensure the health and safety of our fish, dolphins, seabirds, and whales (yes, whales in the Gulf!).

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Sight and Smell: How Traditional Methods Won’t Hold up Against Ocean Acidification

Posted On July 25, 2014 by

Ocean acidification is invisible to the naked eye.  It’s not something we can smell, not something we can feel with our fingers.  But in many parts of the world, that’s just how fishermen and shellfish farmers assess the water they work in.

Right now, the methods we have to understand and respond to ocean acidification are expensive, requiring a lot of equipment.  For example, oyster farmers in the Pacific Northwest rely on ocean monitoring systems that tell them the condition of the water, high-tech hatcheries that give them a controlled environment in which to rear their oysters, and buffering systems that allow them to neutralize the water coming in and make it suitable for oyster growth.

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Fishermen and Scientists Work Together to Track Sick Fish

Posted On July 21, 2014 by

University of South Florida Professor Steven Murawski began studying diseases in fin fishes after the 2010 Deepwater Horizon oil spill when Gulf of Mexico fishermen began reporting a surge in fish with visible lesions. Credit: C-Image. Caption from phys.org

Fishermen are on the water every day, which means they are often the first to notice when something changes. After the BP Deepwater Horizon oil disaster, we heard reports from fishermen that they were catching more fish with lesions than they had ever seen before. Immediately after hearing these reports, Dr. Jim Cowan at LSU began investigating the frequency, location and cause of the reported lesions. Many other scientists have collected data on this same issue, and last week a group from the University of South Florida published the first round of results in a scientific journal.

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The Ground Beneath Their Feet: The Threat of Ocean Acidification to a Small Island

Posted On July 10, 2014 by

What if the ground beneath your feet, the very foundation of your life and livelihood, was at risk of eroding away?  What if the very thing from which you and your community draw 95% of your wealth was at risk of disappearing?

This is the reality that Aitutaki, a small island in the Cook Islands, and many other small islands around the world, are facing.  Aitutaki, and its stunning lagoon, is protected by a coral reef.  Powerful ocean waves crash on the edges of the reef, but because coral reduces wave strength by 97%, the lagoon and the coral sand beaches remain still and calm.  The value of this protection, and the environment it creates, cannot be overstated.

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How We Can Respond to Increased Shipping in the Bering Strait

Posted On May 28, 2014 by

Recent posts on The Blog Aquatic have focused on the Bering Strait: the 50-mile-wide gateway that separates Alaska from Russia, and that provides the only marine passage between the North Pacific and the Arctic oceans.

Two weeks ago, we highlighted the extraordinary abundance of wildlife that migrates through the Bering Strait each spring—from bowhead whales and ice-dependent seals to walruses and seabirds. We also emphasized the importance of the region’s highly productive marine ecosystem to the residents of coastal communities who rely on marine resources to support their subsistence way of life and cultural traditions.

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One of the Biggest Arctic Migrations You’ve Never Heard of

Posted On May 12, 2014 by

Photo Credit: NOAA National Marine Mammal Laboratory

Ocean Conservancy will be publishing a blog series exploring the wonder of the Bering Strait and highlighting threats and solutions to this region.

The Bering Strait—located between Alaska’s Seward Peninsula and Russia’s Chukotka Peninsula—is the only marine gateway connecting the Arctic Ocean and Pacific Ocean. At its narrowest point, the strait is just 55 miles wide. Big Diomede Island (Russia) and Little Diomede Island (U.S.) are located near the middle of the Bering Strait, and are separated by a strip of water less than three miles wide. Despite its cold, remote location, the Bering Strait is a key biological hotspot, a region that contains a significant number of species – some of which are found nowhere else on Earth. This strait is both a bottleneck and a pathway for marine life.

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