Scientists are baffled by a wave of whale deaths - which saw more carcasses wash up on the coasts of Scotland and Ireland in the past month than in the previous decade.
NOAA and NASA satellites measured an average sea-surface temperature of 68.93 degrees Fahrenheit in the Gulf of Maine on Aug. 8, only 0.05 degrees below the all-time record high of 68.98 set in 2012. It is the epicenter of the U.S. lobster fishing industry, an important feeding ground for rare North Atlantic right whales .
Walruses were found washed up on the beaches from Cape Espenberg to Shishmaref and further west. Samples taken from the intestines of four walrus all had moderate to high levels of saxitoxin.
130 dead seals washed up in Russia's Lake Baikal, and scientists have taken lake water samples and biopsies of the animals. Preliminary theories about the die-off did not suggest pollution is the reason.