This species is very active during the day, even if it can be seen at night.
She does not know how to backtrack and will use her detection of obstacles to circumvent them.
The whale shark is the largest fish in the world!
Some whales are larger, but they are mammals, not fish!
Parrotfish create a protective envelope around them when they are sleeping.
So, don't put the light on them during night dive to don't to wake them up and break this envelope.
Mammals have a horizontal tail.
Fishes have a vertical fin.