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Sharks won’t hunt as well in acidifying oceans

The world’s oceans are a sink for carbon dioxide, absorbing about 25 percent of all the additional CO2. With rising levels of greenhouse gases, oceans have experienced an average 0.1-unit reduction in pH since preindustrial times. Sharks have such a superior sense of smell — they’ve been called “swimming noses” — but changes in seawater […]

Odor tracking in sharks is reduced under future ocean acidification conditions

Recent studies show that ocean acidification impairs sensory functions and alters the behavior of teleost fishes. If sharks and other elasmobranchs are similarly affected, this could have significant consequences for marine ecosystems globally. Show More Summary

8-16-14 How Can 13 Whales Seem Like 50?

Saturday, August 16th...the fog re-appeared and so did whales......Group A had evidently come down from the north in the night...not heard from County Park, and not heard over the hydrophones - or I slept through them, because they showed...Show More Summary

8-15-14 Some Vanished Others Reappeared

Friday, August 15th... no fog and no whales and 27 plus Ts just vanished!...Granny's group - Group A showed up near the entrance to the Fraser River...they don't need the test fishing and the emails to figure out where the salmon are...Show More Summary

Time to take ocean acidification seriously

U.S. senators Maria Cantwell, D-Wash., and Mark Begich, D-Alaska, are preparing legislation calling for a national strategy to combat ocean acidification. And well they should: The two states they represent have much at stake in this attempt to get a grip on a devastating environmental problem. As early as 2005, oyster larvae in the marine […]

Ocean’s rising acidification eating away at shellfish that coastal tribes depend on

The ancestral connections of tribal coastal communities to the ocean’s natural resources stretch back thousands of years. But growing acidification is changing oceanic conditions, putting the cultural and economic reliance of coastal tribes—a critical definition of who they are—at risk. Show More Summary

8-14-14 Marine Mammal Eating Orcas Seize the Day!

Thursday, August 14th...fog, fog and more fog...and even with all that fog someone spotted killer whales...transients/Bigg's/marine mammal eating killer whales...and there weren't just a few as we have been seeing...by the time I got through all my images there were 7 family groups totaling 27 killer whales, plus possibly one more... Show More Summary

CEO Note: Progress for Sharks

A dusky shark (Carcharhinus obscurus). (Photo: Richard Ling / Flickr Creative Commons) If you’re like most ocean lovers, you’ve probably spent a few nights this week tuning in to Discovery Channel’s Shark Week. But as we celebrate our collective love of sharks, we should also take a moment to reflect on the many threats that sharks face. read more

Poll Update: Great White Sharks Win as the Fan Favorite (Photos)

A great white shark (Carcharodon carcharias). (Photo: "White shark" by Pterantula (Terry Goss) at en.wikipedia - Derivative of w:Image:Whiteshark-TGoss5b.jpg. Licensed under Creative Commons Attribution 2.5 via Wikimedia Commons) In honor of Shark Week, we asked our audience on Tuesday to weigh in on their favorite shark species. Show More Summary

Dusky’s Big Adventure, Day 5: Dusky Asks for Help to Complete His Bucket List

Dusky asks for help completing his Bucket List. (Photo: Oceana) This is the last post in a five-part blog series that features Dusky the Shark. This week, Dusky appeared in a comic strip that explains why dusky sharks in the northwestern Atlantic are at risk, and what actions he and Oceana are taking to protect his species. Show More Summary

Ocean acidification accelerates dissolution of experimental coral reef communities

Ocean acidification (OA) poses a severe threat to tropical coral reefs, yet much of what is know about these effects comes from individual corals and algae incubated in isolation under high pCO2. Studies of similar effects on coral reef communities are scarce. To investigate the response of coral reef communities to OA, we used large […]

York survey highlights ocean research priorities

Declines in ocean productivity, increases in ocean acidification, and the cumulative effects of multiple stressors on ocean health are among the most pressing issues facing coastal and maritime countries, according to a survey of scientists by a University of York researcher. All three issues were ranked in the top five ocean research priorities by oceanographers […]

8/12-13/14 Just Where Did Those Three Whales Go

Tuesday/Wednesday, August 12/13th Tuesday, August 12th...a small group of whales, spread way out, spotted in Rosario Strait...Residents or Transients?...the small number makes one think of Ts, but the 'spread way out' makes one think...Show More Summary

Bycatch Spotlight: One of the Biggest Issues Facing Sharks Today

A dusky shark hooked on a long line. (Photo: NOAA Fisheries) In honor of Shark Week, Oceana is taking a look at one of the biggest issues facing sharks today: bycatch, or the unintentional catch of non-target fish and other marine life. Show More Summary

8-11-14 They Aren't Just a Bunch of Whales in the Water

Monday, August 11th... J Pod Group A, the J22s (aka J10s or the Cookies), and the K Klik (Cappuccino K-21, Opus K-16 and Sonata K-35) came down mid-morning and met up with the L12s...what an interesting combination......I learned that...Show More Summary

Video: Meet Some of the Most Famous Satellite Tagged Sharks

Dr. Neil Hammerschlag, Dominique Lazzare, and Curt Slonim from the University of Miami measuring a Caribbean reef shark (Carcharhinus perezi) before tagging it onboard the Lat-Long shark tagging operation. (Photo: Oceana / Carlos Minguell) From...Show More Summary

Dusky’s Big Adventure, Day 4: Dusky Creates “Dusky’s Bucket List” to Save His Species

Dusky creates “Dusky’s Bucket List” to save his species. (Photo: Oceana) This is the fourth post in a five-part blog series that features Dusky the Shark. This week, Dusky is appearing in a comic strip that explains why dusky sharks in the northwestern Atlantic are at risk, and what actions he and Oceana are taking to protect his species. read more

The effects of ocean acidification on the development and calcification of the larval shells of the red abalone Haliotis rufescens swainson, 1822

This study focuses on the effects of increasing atmospheric carbon dioxide and decreasing pH on the development and calcification of larval red abalone shells. Experimental bowls were inoculated with 2 mL of a homogenous mixture of red abalone embryos. Six replicate bowls were placed inside each of four plexiglass gas chambers: a control chamber injected […]

Will oysters share the same fate as the Wicked Witch of the West?

WASHINGTON, DC – Oceans. You don’t have to live on the East or West coasts to understand and appreciate the appeal of the oceans. From long walks on the beach to collecting seashells, images of the oceans proliferate our media, romantic literary epics, and vacation planning. However, that is all changing as our oceans increase […]

Begich to introduce legislation to promote ocean acidification monitoring and protect Alaska fisheries

Today, U.S. Senator Mark Begich joined Senator Maria Cantwell (D-WA) to call for a national strategy to address ocean acidification and prevent harm to Alaska and our nation’s commercial fishing industry. The announcement came during a stop at a National Oceanic and Atmospheric Administration (NOAA) laboratory to see high-tech buoys that detect changes in ocean […]

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