sevengill-shark

I am so lucky. I have been recruited to help during some of our shark training sessions. I am responsible for bridging them when they successfully take food from the target pole. AND I get to desensitize them to tactile behaviors. So basically when a shark swims by the surface I reach down and touch it gently along its back and hope that it doesn’t freak out or thrash. These types of behaviors are important for the sharks to be comfortable with so that they aren’t as stressed during their yearly physicals.

Shark swap!

Two in…

We recently added two female sevengill sharks to the Monterey Bay Habitats exhibit. They were collected from the San Francisco Bay, a sevengill shark hotspot. Here are their stats:

She Shark 1

  • 6.7 feet - 2.01 meters
  • 83 pounds - 37.6 kilograms

She Shark 2

  • 5.3 feet - 1.64 meters
  • 42 pounds - 19.2 kilograms

… And two out!

The new girls are replacing two other sevengills that were just returned to the San Francisco Bay, as a part of a long-term scientific monitoring program.

By measuring how fast these animals grow in our exhibit—where we know how much they’ve eaten and how cold the water was—we can assess how healthy their food supply is in the wild, if we find the sharks again. And by using satellite tags, we’ve found that our sevengill sharks can go on massive migrations up and down the West Coast!

Sevengills are usually with us for a year or so before they head back to the ocean. Before your next trip, you can catch them on our new shark cam.

Learn more about the research the Monterey Bay Aquarium is conducting to help the conservation of the ocean (and its sharks)!

Seven thumbs up for sevengills!

2

Broadnose Sevengill Shark (Notorynchus cepedianus)

The Broadnose Sevengill Shark is the only extant member of its genus. Whereas most other sharks have 5 gill slits, sevengill sharks are recognisable because of its 7 gill slits.

Like many other fish, the shark uses counter shading as a of camouflage. Its dorsal surface is silvery grey in colour, which allows it to blend with the dark waters beneath it when viewed from above. Conversely, its ventral surface is light in colour, matching the sunlit surface when viewed from below.

An opportunistic predator, the broadnose sevengill preys on a great variety of animals. It has been found to feed on sharks, rays, chimaeras, cetaceans, pinnipeds, bony fishes, and carrion. These sharks occasionally hunt in packs to take down larger prey, using tactics such as stealth to succeed.

Information: Wikipedia, Images: Robertson, D Ross

inquisitr.com
Shark Vs Orca: Sevengill Throws Itself Out Of The Sea To Escape Killer Whales
Researchers came to the rescue of a sevengill shark earlier this week after the frightened predator literally flung itself out of the sea in an effort to escape

Researchers came to the rescue of a sevengill shark earlier this week after the frightened predator literally flung itself out of the sea in an effort to escape a pod of killer whales that were hunting it.