Well if they destroyed their findings, we wouldn't know, would we? :P

On a serious note. There was a study done on the sexual activities of penguins during an arctic expedition that was kept hidden for 100 years because of how lewd it was. Basically the penguins were engaging in all sorts of sexual deviancy and the scientist in question thought it would be too depraved to publish.

Here is a decent enough article about it.

Great quote from the article below:

At the time, Levick was so shocked by what he saw he recorded the events in Greek to disguise the information, at one point writing, "There seems to be no crime too low for these penguins."

Sorry, we don't allow throughout history questions. These tend to produce threads which are collections of trivia, not the in-depth discussions about a particular topic we're looking for. If you have a specific question about a historical event or period or person, please feel free to re-compose your question and submit it again. Alternatively, questions of this type can be directed to more appropriate subreddits, such as /r/history or /r/askhistory.