Rare ugly shark captured in Japan. Sushi anyone?

[ken0042]

Originally Posted by TheyCallMeBruce

It would be interesting if they are able to capture some of these creatures and exibit them in some sort of deep sea zoo. I know it'll be tough when it comes to something like this. They live in extreme pressure environments, and capturing them in a pressure chamber to stablize and simulate their environment is near impossible.

Somebody correct me if I'm wrong, but there is no such thing as water pressure as far as fish are concerned. The reason us humans and our submarines react is we have pockets of air inside of us, and the weight of the water does serve to compress that air. But because water cannot compress, a creature that normally lives 1 mile down wouldn't be affected by any sort of pressure if it came back up to 10 feet under water.

[FlamesAddiction]

Originally Posted by ken0042

Somebody correct me if I'm wrong, but there is no such thing as water pressure as far as fish are concerned. The reason us humans and our submarines react is we have pockets of air inside of us, and the weight of the water does serve to compress that air. But because water cannot compress, a creature that normally lives 1 mile down wouldn't be affected by any sort of pressure if it came back up to 10 feet under water.

I don't know for sure, but I have heard stories of people catching fish in extremely deep water and the pressure change causes their organs to be pushed out their mouths. I don't know if that is fact though.

[Hack&Lube]

Originally Posted by ken0042

Somebody correct me if I'm wrong, but there is no such thing as water pressure as far as fish are concerned. The reason us humans and our submarines react is we have pockets of air inside of us, and the weight of the water does serve to compress that air. But because water cannot compress, a creature that normally lives 1 mile down wouldn't be affected by any sort of pressure if it came back up to 10 feet under water.

Pressure affects everything. Deep sea creatures can't even breath in different pressures. Think about opening a can of pop. The pop is fine because the pressure in the can keeps the C02 dissolved. Open the can and the lower pressure causes all the gas to come out. Humans acclimated to deeper ocean pressures cannot ascend too quickly or they get the bends because the nitrogen in their bodies come out of solution. The same thing will happen to any organism. There is no creature that will not be affected by compression or decompression. Any life form has some form of liquid and gas in a very precise balance in it. The animals that can manage both shallow and deep ocean survival such as whales are adapted to regulate this because they feed in the deep but must come up to breathe air (as they are mammals). Creatures that are adapted only for deep sea environments will almost always die.

Deep ocean pressure is just the weight of millions of tons of water above you. It'll crush or compress anything whether or not it has air in it. If you bring something designed for the deep up to the surface rapidly, it'll have the opposite problem of expansion. Can anybody say exploding fish?

Also, many of these creatures may be extremely light sensitive since there is no light at those depths. Sunlight could kill them.

[RougeUnderoos]

Originally Posted by Hack&Lube

P
Can anybody say exploding fish?

Also, many of these creatures may be extremely light sensitive since there is no light at those depths. Sunlight could kill them.

Oh great, that's all we need -- an exploding cannibal vampire shark.

[Bertuzzied]

Originally Posted by RougeUnderoos

Oh great, that's all we need -- an exploding cannibal vampire shark.

hmmm. Sounds tasty with some wasabi and soy sauce.

[MonsieurFish]

Originally Posted by TheDragon

See, I'm completely opposite. I absolutely love the ocean and think any creatures we haven't discovered are incredibly fascinating, especially ones like this shark.

Look at it! It doesn't even look or swim like a shark!

It looks more like a snake!

im with you on this. ive always loved sharks and crazy ocean creatures, however they do scare the sh1t with me and scare me away from the ocean. they're awesome in the comfort of your living room though

[burnin_vernon]

Originally Posted by MonsieurFish

im with you on this. ive always loved sharks and crazy ocean creatures, however they do scare the sh1t with me and scare me away from the ocean. they're awesome in the comfort of your living room though

what about a shark cage? i think i would like to try that one

[SaskaBushFire]

Ya deep sea monsters are really interesting to everyone I think. The unknown is always a very popular topic.

I considered being a marine biologist as my profession but quickly found out I wouldn't be able to hack it since I refused to go in the water. Put my in any lake and I am fine, put my in the ocean and I will cry.

[troutman]

I recently saw a Canadian Geographic documentary about the first people to dive with a Greenland Shark:

http://www.geerg.ca/english/index.html

[Igottago]

I live a few blocks away from the pacific ocean. I am convinced that one day a giant sea creature is going to emerge from the water and destroy the city.

[ken0042]

Originally Posted by Hack&Lube

Deep ocean pressure is just the weight of millions of tons of water above you. It'll crush or compress anything whether or not it has air in it. If you bring something designed for the deep up to the surface rapidly, it'll have the opposite problem of expansion. Can anybody say exploding fish?

I found a link that shows where we are both a little wrong. I was correct that water being a liquid does indeed not compress (or at least not very much.) However the same link goes on to explain that most fish; including deep sea fish, have a gas bladder inside them to control boyancy. And it's that gas bladder that causes the deep sea fish to explode when brought up close to the surface.

http://www.fathom.com/course/10701050/session1.html

(read the part called "The Problem of Pressure" to the bottom right hand side of the picture of the Earth.)

[Barnes]

Originally Posted by Igottago

I live a few blocks away from the pacific ocean. I am convinced that one day a giant sea creature is going to emerge from the water and destroy the city.

Why do you live there then? Put a few mountain ranges between you and the beast.

That thing is creepy. I'll stick to nice clean Canadian lakes were the creepeiest things are sturgeons. One time I went swimming in the St Lawrence near where the Ottawa river joins. I like my third nipple.

[Igottago]

Originally Posted by Barnes

Why do you live there then? Put a few mountain ranges between you and the beast.

Well then I'd have to deal with Bigfoot.

[SaskaBushFire]

Originally Posted by Igottago

I live a few blocks away from the pacific ocean. I am convinced that one day a giant sea creature is going to emerge from the water and destroy the city.

That "sea monster" will be named Earthquake

[TheyCallMeBruce]

This is what I mean by "pressure"
http://www.mbayaq.org/video/video_po...c_pressure.asp

[Jake]

Originally Posted by TheyCallMeBruce

deep sea creatures always interests me. My favorite is the giant squid and giant octopus.

http://news.nationalgeographic.com/n...s/giant_squid/

We've actually found several dead squid that are even bigger than the giant squid (archyteuthis) called either mesonychoteuthis or by its common name the colossal squid.

I love the ocean. I'm going to the Bamfield Marine Science Center next fall for a semester to study marine ecology and animals towards a major in marine science. Really looking forward to it.

I think if anyone actually saw a giant squid they would be disapointed because they don't actually look that large- most of their length comes from the arms and tentacles. However, they wouldn't be disapointed with how strong they are. The scars on sperm whales are suspected to be from these squid and the musculature found in dissections of dead ones shows that they are incredibly strong. They also have some pretty mean looking spikes.

[FlamesAddiction]

Originally Posted by Jake

I love the ocean. I'm going to the Bamfield Marine Science Center next fall for a semester to study marine ecology and animals towards a major in marine science. Really looking forward to it.

I spent a few weeks there before. I'm sure you'll love it.

[Jake]

Originally Posted by FlamesAddiction

I spent a few weeks there before. I'm sure you'll love it.

What were you doing out there? I'm a bit nervous because the fall program is supposed to be really hard- I think I remember 50+ hours of class and field trips a week.

[Beefcake]

Originally Posted by Hack&Lube

... Humans acclimated to deeper ocean pressures cannot ascend too quickly or they get the bends because the nitrogen in their bodies come out of solution. The same thing will happen to any organism. ...

This statement isn't entirely correct. The only reason we have nitrogen in our system is because we breathe air (made up of oxygen, nitrogen, and an insignificant amount of other gases such as helium, etc). The nitrogen comes out of solution because unlike oxygen, our body can't metabolize the increased volume of the gas (due to the decreased pressure at shallower depths). Deep water organisms that don't come to the surface and breath air (incl. nitrogen) into their system won't have this same issue.

I'm no marine biologist, but I assume your statement that all (or at least many) organisms are affected (albeit in different ways) by decompression.

- Diving nerd

[return to the red]

Originally Posted by troutman

I recently saw a Canadian Geographic documentary about the first people to dive with a Greenland Shark:

http://www.geerg.ca/english/index.html

I saw this on discovery the other day.

There is some very cool creatures out there and i'm sure many more that have yet to be discovered. I can't wait to see what else lies ahead as we develope new technologies that allow us to find and study these new species.