would there have been sharks during the sinking of the titanic in the Atlantic ocean?

my suspicion is that there wouldn't be many sharks in the north Atlantic around that time of year. google searches seem to point that way.

I'd have thought that the water temperature was too low for sharks that night...

Too cold

yes....greenland shark

Of course. Do you think they die out in the Atlantic?

No. Too cold that time of year for them.