Posted By: Blade_RJ
Rare Sperm Whale Encounter with ROV - 07/14/19 10:51 PM
amazing
Rare Sperm Whale Encounter with ROV
Posted By: Blade_Meister
Re: Rare Sperm Whale Encounter with ROV - 07/15/19 02:20 AM
1,962 ft, how does the pressure of the water not crush him/her? That was awesome, thanks Blade_RJ.
S!Blade<><
S!Blade<><
Posted By: vonBaur
Re: Rare Sperm Whale Encounter with ROV - 07/15/19 03:48 PM
Very cool!
Posted By: Mr_Blastman
Re: Rare Sperm Whale Encounter with ROV - 07/15/19 07:22 PM
Originally Posted by Blade_Meister
1,962 ft, how does the pressure of the water not crush him/her? That was awesome, thanks Blade_RJ.
S!Blade<><
S!Blade<><
Has to do with the density of the body versus the density of water. Since we're 70% water, and that whale is likely as much or more, for the most part regular tissue is fine even at that depth. What does compress, however, are the lungs--which can compress significantly, and in whales, completely due to their flexible rib cages, whereas ours cannot, thus the next point: narcosis. Narcosis is nitrogen being squeezed into the blood which has a debilitating narcotic effect, which can cause hallucinations or even death in a human. Whales, on the other hand, collapse their lungs entirely thus preventing this issue. The following passage might be helpful:
Quote
The organ that is most susceptible to compression damage is the lung. Deep diving whales and seals have reinforced airways that allow the lungs to collapse during the dive, preventing damage. The collapse forces the air away from the alveoli (where the gas exchange between the lungs and blood occurs). To stop this gas exchange is important for the body as it prevent a high nitrogen blood lever to occur. “What is the problem with high blood nitrogen level?” When the level of the nitrogen is high it can give a narcotic effect (nitrogen narcosis) and the animals can start acting intoxicated. It can also create a nitrogen bubble if the animal is swimming too fast towards the surface. This bubble can appear anywhere in the body and gives decompression sickness or “the bends”. Collapsing of the lung is the only way the deep diving animals can protect themselves from these two issues.
A problem that occurs with the collapsed lung is the oxygen exchange. Since the lungs can no longer store oxygen deep diving animals need to rely on the oxygen stored in their blood and muscles. They have had several adaptations to support this. First, animals have a large volume of blood up to 4 times higher than human. Second, their concentration of hemoglobin (the oxygen transport protein in blood) is about two times higher than in humans. Third, the concentration of myoglobin (the protein that stores the oxygen in muscles) is extremely high, about 10 times higher than in human.
https:/
https:/
Think of a ship sinking. If the ship sinks with all the hatches closed and sealed, and retains air, eventually it will hit a "crush depth" where the structure crinkles and ruptures, releasing oxygen due to being unable to withstand further compression. Next, think of a sinking ship that fills up with fluid completely while on the surface. If you were to examine this structure on the ocean bottom, aside from the initial impact with the ocean floor, would largely be intact and unaltered because of the internal pressure being the same as external pressure due to them both being full of water. We're the same way, being made mostly of water, and due to the fact that water in large withstands compression.
I happen to have studied this for one of the sci-fi novels I have written, so hope this helps!
Posted By: KraziKanuK
Re: Rare Sperm Whale Encounter with ROV - 07/15/19 10:47 PM
Your example of the ship sinking MR_Blastman is the conclusion reached for the sinking of the Bismarck. There is no doubt it would have eventually sunk but the German sailors quickened the sinking by opened up the ship and it filled with water.
The videoing of the whale is fantastic but some of the comments...
The videoing of the whale is fantastic but some of the comments...
Posted By: Mr_Blastman
Re: Rare Sperm Whale Encounter with ROV - 07/15/19 10:58 PM
I fail to see how my point is incorrect KanuK.
A submarine will crush at depth due to extreme pressures, however, if the submarine was completely filled with water, it likely would not. Everyone would be dead from drowning, but that's another issue... The only question here is why aren't the whales crushed.
Edit, Here's a link saying the same thing different ways:
http://scienceline.ucsb.edu/getkey.php?key=685
A submarine will crush at depth due to extreme pressures, however, if the submarine was completely filled with water, it likely would not. Everyone would be dead from drowning, but that's another issue... The only question here is why aren't the whales crushed.
Edit, Here's a link saying the same thing different ways:
http:/
Posted By: KraziKanuK
Re: Rare Sperm Whale Encounter with ROV - 07/16/19 12:22 AM
I was agreeing with you. .
Posted By: Mr_Blastman
Re: Rare Sperm Whale Encounter with ROV - 07/16/19 12:31 AM
Oh okay, my bad. I was confused by the emoticons. =)
Posted By: Zamzow
Re: Rare Sperm Whale Encounter with ROV - 07/16/19 12:42 AM
Originally Posted by Mr_Blastman
Originally Posted by Blade_Meister
1,962 ft, how does the pressure of the water not crush him/her? That was awesome, thanks Blade_RJ.
S!Blade<><
S!Blade<><
Has to do with the density of the body versus the density of water. Since we're 70% water, and that whale is likely as much or more,
That would be incorrect - fat is the only tissue (at least in mammals, and I'm not sure about hair) that is less dense than water. And marine mammals have the highest body fat percentages of any mammals (barring cases of individual obesity). The Blue Whale holds the record at around 35% body fat.
HOWEVER, I would imagine that fat is very nearly (if not equally even) as incompressible as water...