Tag: "marine mammals"

Sonar and Marine Mammals: A Summary

Sonar and Marine Mammals: A Summary

Do naval testing exercises directly cause whale and dolphin strandings? Here’s a summary of what we’ve learned about marine mammals and sonar so far this year.

Harbor Porpoise. Photo credit: NOAA.

Sonar, ‘Ocean Indigestion’ and the Indian Ocean

Today’s highlights include a study about the effects of navy sonar, oysters fighting ocean acidification and earthquake hazards in the Indian Ocean.

The Keeling Curve, named after Charles David Keeling, the scientists who pioneered atmospheric CO2 research in the 1950s. Photo credit: Vancouver Island   University via photopin cc.

The CO2 Curve, a Deadly US Fishery and a Robot Turtle

Today’s highlights include the iconic CO2 (Keeling) curve, one of the US’s deadliest fisheries and a sea turtle robot built to help analyze the movement of sea turtle hatchlings.

An ice berg in the Beaufort Sea, Alaska. Photo credit: NOAA.

Weekly Roundup 19

Here’s a roundup of other stories worth reading this weekend, including pirates, fishing, Pangaea, the melting Arctic and great white sharks.

This is CTG's 8m long, oil filled array, designed to be deployed to depths of 100 metres. Photo courtesy of Chelsea Technologies Group.

How Does Noise Affect Fish?

Noise pollution from human activities can have a big impact on marine life. Most research is focused on marine mammals but one group is now studying how fish react to sound.

Bottlenose dolphins (Tursiops truncatus) rely on sonar, as do many other marine mammals. Exposure to sonar from man-made equipment has been associated with strandings of marine mammals. Photo credit: Allison Henry, NOAA/NEFSC.

Underwater Navy Testing Plans: “Negligible Impacts” or “Unprecedented Harm”

A report states that the Navy’s plan for testing submarines and weapons systems in the ocean will have “negligible” impacts on marine mammals, but environmentalists claim it will cause “unprecedented harm.”

Blackfish Coming to US Theaters

Blackfish Coming to US Theaters

Blackfish, a documentary focusing on Tilikum, the orca responsible for the death of a Sea World trainer in 2010, will make it to U.S. theaters this summer.

2013: The Year of the Orca?

2013: The Year of the Orca?

Check out this great post from TakePart about six different films and books that highlight the plight of captive orcas.

Short-beaked common dolphin (shown here) and the striped dolphin (below) are similar in size but have very different diets. Photo credit: NOAA.

Whales and Dolphins are Thankful for High-Quality Prey

New research shows that the survival of whales and dolphins depends on the quality of their diets.

Steller sea lions - Credit: NOAA

Steller Sea Lion Numbers Still Declining In Some Areas

Researchers from NOAA’s Alaska Fisheries Science Center have published the results of their 2009 count of Steller sea lion pups in Alaska, which shows improvement in some areas and further decline in numbers in others.