Tagged Questions
4
votes
1answer
36 views
How do sharks and other fish conserve and gain water in marine environments?
With the osmolarity of the average vertebrate being around 300mOsml, and salt water having an osmolarity of 1000mOsml, why does the water from the shark not leave to the salt water around it?
I ...
1
vote
1answer
43 views
What type of photosynthesis is performed by phytoplankton?
I am not a biologist, but I know there exist three variants of photosynthesis, namely C3, C4 and CAM.
I would like to know what type is used by the ocean's phytoplankton? It might also be that ...
1
vote
0answers
44 views
What marine animals exhibit deep hibernation/aestivation?
Do marine animals exhibit deep hibernation/aestivation as land-based creatures do?
If not, Why?
3
votes
1answer
117 views
Do all sea creatures that have scales have to have fins?
Do all sea creatures that have scales have to have fins?
Do we know of any sea creatures that have only scales without fins?
I'm especially interested in fish that have scales but no fins.
7
votes
2answers
213 views
Why do stranded marine mammals die so quickly?
Mammals have lungs, so do marine mammals. Nevertheless some marine mammals seem to die rather quickly when they strand on a beach.
As they have lungs and can breath while on land, why do they die so ...
8
votes
2answers
125 views
What are the frequency ranges of most marine mammal vocalizations?
I am trying to determine a list of frequency ranges into which marine mammal vocalizations fall.
Ideally, I would like a list showing where the most popular marine mammal vocalizations fall, followed ...
9
votes
1answer
93 views
Why is there a difference in the rotation of the tail fin in fish compared to marine mammals?
I've been thinking about this one, but I can't seem to find what causes this difference.
All fishes that I've seen have their tail fin positioned vertical:
But all the marine mammals I know have ...
