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Too bad there are more comments about the format of the discovery, than the actual discovery. I gathered that this is not actually the first time a ghost shark

by hcrisp 10y ago

Too bad there are more comments about the format of the discovery, than the actual discovery. I gathered that this is not actually the first time a ghost shark was caught on camera, but the first time it was filmed in its natural habitat. It was seen alive in California and Hawaii in 2011 [0]. There are other ghost shark photos, such as this one (date unknown, file uploaded July 2016) [1]. Video has even existed, such as this one from May 2016 [2]. Maybe this is the first filming of a live Hydrolagus trolli species? What actually happened for the "first time" here? [0] https://en.wikipedia.org/wiki/Pointy-nosed_blue_chimaera https://en.wikipedia.org/wiki/Pointy-nosed_blue_chimaera [1] https://en.wikipedia.org/wiki/Chimaera#/media/File:Deep_sea_chimaera.jpg https://en.wikipedia.org/wiki/Chimaera#/media/File:Deep_sea_... [2] http://www.cnn.com/videos/world/2016/05/18/noaa-marianas-trench-expedition-orig-vstan.cnn http://www.cnn.com/videos/world/2016/05/18/noaa-marianas-tre...

hcrisp 10y ago
Per National Geographic: "The video is the first time the pointy-nosed blue chimaera [Hydrolagus trolli species] has been seen alive in its natural habitat." [0] [0] http://news.nationalgeographic.com/2016/12/pointy-nosed-blue-chimaeras-ghost-sharks/ http://news.nationalgeographic.com/2016/12/pointy-nosed-blue...
taylorbuley 10y ago
Another interesting link: perhaps this creature is now dead because of the format of the discovery https://www.reddit.com/r/askscience/comments/2n1yd4/how_is_it_that_when_deep_sea_creatures_are_filmed/cm9t27t/ https://www.reddit.com/r/askscience/comments/2n1yd4/how_is_i... > I'm a marine biologist and one of my former professors actually did all his research on deep sea eyes, mainly in invertebrates. I asked him about it once, about whether or not it was harmful to have the submersibles blasting white light around everywhere, and his answer was "yep, most of those animals are now blind and will likely die." Research subs usually use red light when in the deep sea since 99.8% of animals can't see it (red is the first wavelength filtered out in seawater so there is no red light at depth. Almost all deep sea organisms don't even have photoreceptors to see it) and it's not harmful. The white lights are mostly used for filming purposes. But yeah, they absolutely are being blinded most of the time.
- Someone 10y ago
  So, that could be the reason for the way this animal behaves (in my amateur opinion a bit aimless), too?
  - pvaldes 10y ago
    Looks more curious than afraid. Investigating the camera probably. If feeling pain would swim away. A healthy fish also; not parasites at sight.
- pvaldes 10y ago
  If you feel better, this fishes can probably survive even being blind. Sharks have complex and sophisticated senses related with smell, touch and taste, and can also sense electric fields emited by preys (or machines)
pvaldes 10y ago
> this is not actually the first time a ghost shark was caught on camera Nope, they have been filmed before https://www.youtube.com/watch?v=itDgL7nq8Kc https://www.youtube.com/watch?v=itDgL7nq8Kc https://www.youtube.com/watch?v=SxuAh8hXnS4 https://www.youtube.com/watch?v=SxuAh8hXnS4 Is just that is a rare species of Chimaeridae

by hcrisp 10y ago

hcrisp 10y ago

Per National Geographic: "The video is the first time the pointy-nosed blue chimaera [Hydrolagus trolli species] has been seen alive in its natural habitat." [0] [0] http://news.nationalgeographic.com/2016/12/pointy-nosed-blue-chimaeras-ghost-sharks/ http://news.nationalgeographic.com/2016/12/pointy-nosed-blue...

taylorbuley 10y ago

Another interesting link: perhaps this creature is now dead because of the format of the discovery https://www.reddit.com/r/askscience/comments/2n1yd4/how_is_it_that_when_deep_sea_creatures_are_filmed/cm9t27t/ https://www.reddit.com/r/askscience/comments/2n1yd4/how_is_i... > I'm a marine biologist and one of my former professors actually did all his research on deep sea eyes, mainly in invertebrates. I asked him about it once, about whether or not it was harmful to have the submersibles blasting white light around everywhere, and his answer was "yep, most of those animals are now blind and will likely die." Research subs usually use red light when in the deep sea since 99.8% of animals can't see it (red is the first wavelength filtered out in seawater so there is no red light at depth. Almost all deep sea organisms don't even have photoreceptors to see it) and it's not harmful. The white lights are mostly used for filming purposes. But yeah, they absolutely are being blinded most of the time.

Someone 10y ago
So, that could be the reason for the way this animal behaves (in my amateur opinion a bit aimless), too?
- pvaldes 10y ago
  Looks more curious than afraid. Investigating the camera probably. If feeling pain would swim away. A healthy fish also; not parasites at sight.
pvaldes 10y ago
If you feel better, this fishes can probably survive even being blind. Sharks have complex and sophisticated senses related with smell, touch and taste, and can also sense electric fields emited by preys (or machines)

pvaldes 10y ago

> this is not actually the first time a ghost shark was caught on camera Nope, they have been filmed before https://www.youtube.com/watch?v=itDgL7nq8Kc https://www.youtube.com/watch?v=itDgL7nq8Kc https://www.youtube.com/watch?v=SxuAh8hXnS4 https://www.youtube.com/watch?v=SxuAh8hXnS4 Is just that is a rare species of Chimaeridae