In a number of cases fishing captains have reported losing tens of thousands of pounds of halibut and black cod after being followed a number of miles by orcas.
One described the pods as like a “motorcycle gang” which leave little more than the lips of the fish they snatch.
While killer whales were previously an infrequent sighting for fishermen in the Bering Sea, the problem is now said to be “systemic”.
“We’re being chased out of the Bering Sea,” fishing vessel co-owner Paul Clampitt told the National Post.
“When I started fishing in the early 80s, when we saw a whale it was an event. Now, they circle the boat.”
Mr Clampitt said his crew tried to use sound machines to deter the whales, but before long the orcas got used to noise.
“It became a dinner bell,” Mr Clampitt said.
Fishing boat captain Robert Hanson said he was “harassed nonstop” by orcas during a trip in April, when his crew lost 12,000 pounds of halibut and used 4,000 gallons of fuel attempting to outrun the animals.
During another expedition to an area near the Russian border, Mr Hanson said he tried to fish for two days before giving up after a pod of at least 50 whales appeared.
“The pod tracked me 30 miles north of the edge and 35 miles west (while) I drifted for 18 hours up there with no machinery running and they just sat with me,” he told Alaska Dispatch News.
Display boards at this year’s Glastonbury festival are going to powered by urine, provided via a 40-person urinal which will be situated near to the headline Pyramid stage.
Technology designed by scientists at the Bristol Bioenergy Centre (BBiC) can harness the power of pee to illuminate the darkness and charge mobile phones.
While this isn’t the first time that “Pee Power” has featured at the festival, it is the first time in which it will be used to power information boards keeping attendees in the know.
The 40-person urinal will be conveniently placed by the Cider Bus, just a few hundred metres from the Pyramid stage.
Scientists and student volunteers working with the BBiC will be at the event to explain the technology to festival-goers.
Their biggest challenge will be making Pee Power’s largest microbial fuel stack yet and the team have had to outsource the building of it for the first time.
More than 1,000 litres of attendees’ urine is expected to flow through the system every day, with the scientist’s microbial fuel cells generating energy from the fluid.
The fuel cells house bacteria which literally eat human urine and create biochemical energy as a by-product which can be converted into electricity.
The scientists say that the technology can use “any form of organic waste and turn it into useful energy, without relying on fossil fuels”.
Pee Power, which is funded by the Bill and Melinda Gates Foundation, will later go to Uganda for its first overseas trial.
Professor Ioannis Ieropoulos, director of the BBiC, said: “This unit is primarily about public engagement and Glastonbury festival gives us the chance to showcase our technology to potentially thousands of people.
“The festival updates are one way of showing that Pee Power and the Microbial Fuel Cell technology can be developed for a whole range of uses.”
“The second unit will be located at the area known as the inter stage near the press enclave and performers area. This unit will include a mobile phone charging unit and internal lighting.”
“We knew the artist was likely to be among the men on those expeditions.”
By complete coincidence, her colleague Ms Bergmark-Jimenez went to a lecture on Dr Wilson while the team were working to discover the painter.
“The presenter showed some of Dr Wilson’s artwork,” she said.
“As soon as I saw his distinctive handwriting, I knew he had painted the Tree Creeper. This made sense as there was also a 1911 newspaper article from the Lyttelton Times in the papers and Scott’s party went to Antarctica via New Zealand.”
The watercolour was discovered in 2016 but kept a secret to let the Antarctic Heritage Trust focus on restoring the 1,500 artefacts they recovered from the Cape Adare huts.
It will be returned when the structures have been secured to ensure their continued protection.
While the local goats have been considered something of a menace because of their fondness for the argan fruit, Spanish ecologists have observed an unusual way in which they might actually be helping – they are constantly spitting out their seeds.
Domesticated goats in the region are inordinately fond of climbing to the precarious tops of argan trees to find fresh forage.
In some arid habitats, such as argan forests, most green vegetation is at the tops of the trees – which can grow 10 metres high.
Local goatherds are known to encourage the activity, pruning the bushy, thorny trees to make it easier for goats to ascend them, and even helping the goats’ kids to learn how to climb.
During the bare autumn season in the region, goats can spend three quarters of their foraging time “treetop grazing” in the argan trees.
Argan is popular for the beauty products which feature in argan oil, made from the tree’s nuts.
However, the goats don’t like the large argan seeds. Like cows, sheep and deer, goats re-chew their food after fermenting it for a while in a specialised stomach, and while ruminating over their cud, the goats have been observed spitting out the argan nuts.
This means they are delivering clean seeds to new ground, wherever the goat has wandered.
Scientists believe that in gaining some distance from the parent tree, the seedling gains a much better chance of survival.
This novel seed dispersal effect is a variation on the mechanism ecologists call “endozoochory”, in which seeds more commonly pass all the way through the animal’s digestive system before departing at the other end.
The authors suspected that reports of goats dispersing argan seeds by this more common mechanism were mistaken.
The researchers have witnessed sheep, captive red deer and fallow deer spitting seeds while chewing their cud, and suspect this spitting variation on endozoochory may actually be common – and perhaps an essential route of seed spread for some plant species.