Correct usage, but there is some incorrect grammar.
In the story, Rainsford tried to take Zaroff out but fails everytime, even though his efforts were futile, Rainsford kept trying to survive the hunt.
You have to keep the tenses consistent. First you used past (tried) then you used present (fails).
Also, this sentence can be made into two; it is a run-on sentence.
Here's my revision: In the story, Rainsford <span>tried </span>to take Zaroff out but <span>failed </span>every time; but even though his efforts were futile, Rainsford kept trying to survive the hunt.
Since both sentences are related, I've linked them with a semicolon.
The answer is shown above
Whale sharks are one of the biggest fish reaching lengths of about 40 feet
Answer:
I do not know what story you are reading so maybe a piece of advice, put the title of the story next time!
Explanation:
hope this helps!