A right whale feeding just below the surface of Cape Cod Bay offshore from Wellfleet, Massachusetts. Photo: Right Whale Research / AP

By Joanna Walters
26 February 2018
(The Guardian) – The dwindling North Atlantic right whale population is on track to finish its breeding season without any new births, prompting experts to warn again that without human intervention, the species will face extinction.Scientists observing the whale community off the US east coast have not recorded a single mother-calf pair this winter. Last year saw a record number of deaths in the population. Threats to the whales include entanglement in lobster fishing ropes and an increasing struggle to find food in abnormally warm waters.The combination of rising mortality and declining fertility is now seen as potentially catastrophic. There are estimated to be as few as 430 North Atlantic right whales left in the world, including just 100 potential mothers.“At the rate we are killing them off, this 100 females will be gone in 20 years,” said Mark Baumgartner, a marine ecologist at the Woods Hole Oceanographic Institution in Massachusetts. Without action, he warned, North Atlantic right whales will be functionally extinct by 2040.Baumgartner said that until about seven years ago, the population of North Atlantic right whales was healthy. But then lobster fishermen began greatly increasing the strength of ropes used to attach lobster pots to marker buoys.Whales becoming entangled are now far less able to break free, Baumgartner said. Some are killed outright, others cannot swim properly, causing them to starve or to lose so much blubber that females become infertile.“Lobster and crab fishing and whales are able to comfortably co-exist,” Baumgartner said. “We are trying to propose solutions, it’s urgent.” [more]

North Atlantic right whales may face extinction after no new births recorded