Question

Deep water fish are hard to transport to the surface safely. Why do you think that is?

As the water pressure decreases, there is not enough oxygen for the fish in the water

As the water pressure increase, the air in the swim bladder compresses until they burst.

As the water pressure decreases,the air in the swim bladder compresses until they burst. Is it this one... and explain why or why not

As the water pressure decreases,the air in the swim bladder expand. until they burst.

Answer 1

Answer is Option D

deep sea fish have evolved in the deep they have the same pressure inside their bodies as is outside in the environment - this however means that true deep sea fish cannot migrate to shallow waters as to do this would be to comprise the integrity of their cell membranes (which have evolved to contain high levels of polyunsaturated fatty acids to cope with the extreme pressure) and risk the expansion of gas vacuoles, which would essentially cause them to explode (which is why many deep sea fish look kinda funny when you bring them up quickly to the surface).

Evolving to cope with extreme pressure is not much different from evolving to cope with cold or any other extreme environmental conditions - just like you wouldn't put a polar bear in the desert because it's evolved to live in freezing environments you wouldn't put a deep sea fish in surface waters.

Deep sea fish also have a bunch of other adaptions to cope with the harsh conditions of life below 4000 meters or so, such as reduced muscle masses and slow metabolism.