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Officials: At least 20 whales in deeper water

Wildlife officials prepared Thursday to use sound and other herding techniques to try to save pilot whales in danger of stranding as a glimmer of hope emerged for at least 20 of the animals spotted swimming in life-saving deeper water.

Blair Mase, a fisheries stranding coordinator for the National Oceanic and Atmospheric Administration, said a Coast Guard helicopter found two pods of whales in about 12 feet of water, “significantly north” of their previous location in Everglades National Park. The short-finned pilot whale is a deep-water species that cannot survive long in the shallows.

Another NOAA strandings official, Liz Stratton, said the pod in deeper water could reach as many as 30 animals and that they were about 11 miles offshore at midday.

"The challenge for them will be to continue to get in the water they are supposed to be in," she said.

Mase said about 15 vessels carrying about 35 personnel were en route late Thursday morning to find the whales, at least 10 of which have already died since the stranding was discovered Tuesday. At last count 41 were still alive and swimming, although Mase said it appears none are in the same location as previously and that they are more spread out.

"The situation is fluid and changing," Mase told reporters.

Wildlife workers planned to try using noise such as banging on pipes and revving boat engines to herd the whales out to the open ocean. But Mase cautioned that as in similar past strandings, it is very difficult to move the whales out.

"We still want to set expectations low because we are facing the same challenges as yesterday. It’s quite a distance to deeper water," she said. "Guiding and herding seems to be the best course of action. We’re hoping it will just push the whales gently out into the water."

Six whales were found dead in the remote area on the park’s western edge, and four had to be euthanized. The whales were first spotted Tuesday about 20 miles (32 kilometers) east of where they normally live. It takes more than an hour to reach the spot from the nearest boat ramp and there is no cellphone service, complicating rescue efforts.

Teams from NOAA, the National Park Service, the Coast Guard and state wildlife agencies were working to prevent any more whales from stranding. The animals had not been cooperating Wednesday, when most were in about 3 feet of water.

The short-finned pilot whales typically live in very deep water. Even if rescuers were able to begin nudging the 41 remaining whales out to sea, they would encounter a series of sandbars and patches of shallow water along the way.

The species also is known for its close-knit social groups: If one whale gets stuck or stays behind, the others are likely to stay or even beach themselves as well.

"It would be very difficult for the whales to navigate out on their own," Mase said.

Federal officials were notified about the whales Tuesday around 4 p.m. Because of the remote location, workers were unable to access the site before dark. They arrived Wednesday morning and discovered 45 whales still alive.

"There were some that were very compromised and in very poor condition," Mase said.

Four were euthanized with sedatives, and more could be put down Thursday if their condition deteriorates, Mase said. She described the remaining whales as swimming and mobile but said scientists don’t know how long they’ve been out of the deep, colder water. She said they could be affected by secondary consequences, such as dehydration.

"I don’t think we have a lot of time," Mase said.

Mase confirmed Thursday that sharks had begun to feed on the dead whales. Necropsies were being done Wednesday, and scientists will look for disease or other signs to indicate how whales got stuck in the shallow Everglades waters. (source)

(Source: trynottodrown)

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