SHARK WEEK: San Diego lifeguards draft shark policy

Due to a fatal injury sustained by a great white attack in April, lifeguards patrolling San Diego beaches are developing a shark response manual. The aim of the new initiative is to provide uniform policies that address shark encounters. The lack of a policy is due to the rarity of shark attacks.

The April attack was apparently a mistake, because the animal – estimated to be anywhere from 12 to 17 feet in length – attacked once without pursuing further. The shark was probably expecting more suitable marine prey such as a pinniped, and pinnipeds were reported swimming in the area at the time of the fatal encounter. The victim died from a “single giant bite across both legs in the ocean”. The incident was considered a freak accident due to the sheer infrequency of shark attacks. From NBC Sandiego.com, CA:

Lerma said the Solana Beach attack, which took the life of triathlete Dr. David Martin, was an eye-opener, even if it was a freak accident. And it served as a wake-up call to get a uniform policy in place to deal with sharks.

Lifeguards said they have been getting more sightings this summer, but they said usually it turns out to be something else, like a dolphin or a seal. One of the things on which the action plan focuses is what kind of questions to ask.

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SHARK WEEK: Public given opportunity to swim with whale sharks at Georgia Aquarium

The Georgia Aquarium is offering the public a chance to swim with whale sharks. Whale sharks (Rhincodon typus) are the largest known fish, so they are rare in captivity. Their feeding behavior, diet, and size make whale sharks unsuitable candidates for captivity, since these characteristics pose certain challenges by making them difficult to house. The aquatic beasts can grow around 45 feet in length or more.

Outside of Asia, the Georgia Aquarium is the only aquarium to house whale sharks in captivity. Two whale sharks have been lost in recent years at the Georgia Aquarium, and there is plenty of dissent on whether these gigantic cartilaginous fish should be kept in captivity. However, the Aquarium is investing in conservation and scientific programs that focus on whale sharks. Furthermore, the Aquarium maintains that its programs are important to connect humans with conservation and nature.

Personally, I’m not sure how I feel about keeping such large creatures in captivity. Certainly, the conservation awareness factor is immense; however, so are the resources involved, risks, and unknowns. I do believe in zoological conservation and its utility, but some species should not be in captivity unless it’s absolutely necessary. In my opinion, species that demonstrate intelligence such as parrots, higher primates, and marine mammals in addition to species that naturally have large territories like big cats are good examples of species that are not good candidates for captivity.

Additionally, not to sound like a first year law student, but certainly a balancing test is appropriate to apply in analyzing such conundrums. Considering the totality of the circumstances is important as well. Such key factors in determining whether an animal belongs in captivity or is appropriate for a particular aquarium or zoological park may include: The intelligence and behavior of the species, resources needed to successfully keep the species in captivity, the aquarium’s or zoo’s budget, the status of the species in nature, or the awareness factor generated by keeping the species. There is no bright line rule to apply. From The Canadian Press, ATLANTA:

“An immersion experience is the ultimate way of connecting people and animals,” said Bruce Carlson, the aquarium’s chief science officer.

“It’s a real opportunity for us to expand ways for people to get to know the animals here at the aquarium and a once-in-a-lifetime opportunity for our visitors to see animals they’ll probably never get a chance to see in the wild.”

But the ambitious program has raised concerns from critics who worry that dangling legs and curious tourists could stress the habitat of the whale sharks and thousands of other animals that share the massive tank.

“There’s a chance these animals can become stressed because of the increase in the amount of people in their environments,” said Lori Marino, an Emory University biologist who studies whale biology. “Not only can it affect their physical health, but their mental health. And we don’t know how much stress this puts on the animals or how they could respond.”

The Georgia Aquarium is one of the few places that have ever attempted to house the creatures, and the only in the U.S.

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On the Net: Georgia Aquarium

SHARK WEEK: RECOMMENDED IMAGE(S): Divers save grey nurse shark with gaff stuck in throat

A grey nurse shark (Carcharias taurus) was discovered with a gaff lodged in its throat. The grey nurse shark or sand tiger shark of Australia is very sensitive to overfishing because this “large coastal species of shark has one of the lowest reproductive rates known among elasmobranchs, giving birth to one or two large young every two years [so]…annual rates of population increase and ability to sustain fishing pressure are very low.” As a result, the grey nurse shark is considered endangered by the IUCN Red List of Threatened Species, and saving every individual – especially a large female – is important for species conservation. The significance of every individual is highlighted by what may be seen by some, as extreme measures taken by government divers and a veterinarian.

Veterinarian David Blyde put his hand down the shark’s throat to remove the gaff, and noted, “as a veterinarian you [are] often putting your hands in places that people find somewhat unattractive.” The gaff was successfully removed, and the animal was released. From the Herald Sun:

Scientists are unsure how the gaff came to be embedded in the 2.97m-long shark but said it was in good health and there was no bleeding when the pipe was removed.

“She was pale, which you’d expect, but once released swam back to the other sharks,” Mr Macdonald said.

A satellite tag has been attached to it so its recovery can be monitored by scientists and local divers. Marine Parks staff also volunteered to look out for her.

The grey nurse shark population is under threat, with less than 500 left in NSW waters.

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Images Found Here

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SHARK WEEK: CAN YOU SEE ME? | ANIMAL CAMOUFLAGE

An angel shark (Squatina sp.) camouflaged against sand. As a genus, angel sharks are considered endangered, since historically they have been overfished.

This is a file from the Wikimedia Commons. Information on this image is found here.

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SHARK WEEK: GREEN ADVERTISEMENT: – fuel + life

“- fuel + life”

From Ads of the World: Creative Advertising Archive & Community:

Advertising Agency: Garnier BBDO, San José, Costa Rica
Creative Director: Tito Araya
Art Director: Sandro Rojas
Copywriter: Juan Luis Valerio
Illustrator: Sandro Rojas
Other additional credits: Pablo Rojas
Published: June 2008

Image Found Here

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