August 2022
Male dolphins form lifelong bonds
Researchers have discovered that male bottleneck dolphins form long-term social groups to help one another find mates and fight off competitors.
It was the first time such behaviour was observed in the animal world.
Their conclusions were based on data collected of 202 Indo-Pacific bottlenose dolphins between 2001 and 2006 in Shark Bay, Australia, using visual and auditory data. In the lab, the researchers then focused on studying the interactions of 121 of individuals for the next decade.
Diver Fined CAD 9,000 For Swimming Too Close to Orcas
A scuba diver in British Columbia, Canada, has been fined a record 12,000 Canadian dollars ($9,250) for approaching a pod of orcas too closely.
In British Columbia, vessels must keep at least 200 meters away from orcas and in southern B.C. coastal waters between Campbell River and just north of Ucluelet, vessels must keep 400 meters away. Vessels must be at least 100 meters away from all other cetaceans.
Arctic Ocean now less salty
Researchers have found that the Arctic Ocean is becoming less salty, because the amount of freshwater flowing through the Bering Strait into it has increased by 40 to 50 percent, over the past 30 years.
This finding is based on a new study by the University of Maryland Center for Environmental Science. According to lead author Lee Cooper, “This could have a lot of downstream implications for how the Arctic Ocean works and connects with climate and related processes, including the intensity of mixing in the North Atlantic.”
Minnows can manage drastic temperature increases, study shows
Like other fish, minnows can adjust their body temperatures to match that of their surroundings.
Research into the effects of climate change on fish generally focus on their heat tolerance at an increase of two or three degrees Celsius above the current average temperatures.
However, a recent University of Illinois study wanted to find out how fathead minnows handled short-term temperature spikes—those amounting to as much as 5 to 10 degrees Celsius above average.
Seawing Supernova
Doggerland - Nordsøens Sunkne Rige
Der var engang et rige som vi nu kalder for Doggerland. Det var et vidtstrakt landområde med tundra, der i stenalderen rakte helt fra Skotland til Danmark og hvor der engang levede mennesker. I takt med at havene steg efter afslutningen af sidste istid blev området gradvist oversvømmet og forsvandt til sidst under havets overflade.
Sjælden kogge fundet udfor Sverige's vestkyst
Interview og tekst: Mimo Moqvist
—Ja, det er faktisk lidt en speciel historie, for vi ledte faktisk efter et helt andet vrag fra 1500-tallet. Allerede i 2005 kom jeg nemlig i kontakt med en mand, hvis far havde fundet et vrag uden for Dyngö, da han fiskede efter ørred, fortæller Staffan von Arbin.
Faderen, der fandt vraget, levede ikke længere, men sønnen fortalte Staffan, at han lå inde med materiale kan kunne se.
Divers find First World War US shipwreck off Cornwall
The USS Jacob Jones was the first American destroyer ever to be sunk by enemy fire. After the United States entered World War I in April 1917, Jacob Jones was sent overseas. On 6 December, Jacob Jones was steaming independently from Brest, France, for Queenstown, when she was torpedoed and sunk by the German submarine U-53 with the loss of 66 men out of a crew of 150. The vessel sank in eight minutes without issuing a distress call.