2019年5月7日 · A study examining all available photographs of North Atlantic right whales taken from 1980 to 2009 found that out of 626 individual whales, 83 percent showed scars caused by ropes or nets, and 59 percent had been entangled more than once.

2023年10月18日 · These threats include: Climate Change: Warming waters caused by climate change have put extreme pressure on our whale populations. Whale food sources, such as zooplankton and small fish, are shifting poleward or declining altogether, affecting whale calving grounds, feeding areas and migration routes.

7. are the many different threats and hazards that affect the gray whale population? use of military sonar, human thirst for petroleum, increased number of ships in ocean, loss of food related to...

Urgent action is needed to safeguard whales amid mounting threats along their migratory routes, says a new global conservation report by WWF and the marine mammal science community. Whales are encountering multiple and growing threats, a …

Factors other than hunting may also be responsible for unnatural whale mortality. For example, right whales frequently are killed when they collide with ships, and each year thousands of dolphins and an unknown number of whales suffocate when they become entangled in deep-sea fishing equipment intended for tuna, cod, and other commercial fish.

2016年12月11日 · Entanglement in fishing gear is one example of an unnatural but relatively common circumstance that imposes energetic demands of a similar order of magnitude and duration of life-history events such as migration and pregnancy in large whales.

2021年5月14日 · Warming oceans pose multiple threats to whales, some of which relate once again to the shipping industry. In recent years the industry has rushed to newly ice-free waters in the Arctic, bringing...

Three main factors appear to contribute to the declining numbers. These include a lack of food, the buildup of pollutants in their bodies and disturbance by boats. Still, understanding the subtle ways these and other marine-world changes interact only makes the issue more complicated. Look Out For Boats!

Between May and September 2019 there were 43 reported whale entanglements off the NSW coast and only a handful of successful rescues. In 2017, a humpback whale which died on a NSW mid-north coast beach had dragged a fishing trap and …

2017年4月3日 · Waves lap at motionless heaps of blubber and fins, and the sun bears down on chapped skin. Gulls start to, well, do what gulls do. This heartbreaking scene happened in January when nearly 100 false...