That's not the real question. The real question is why?
The answer is that Osama Bin Laden was being "detained" in Iran at the behest of the United States Government.
When it was time to kill Bin Laden and seal the reelection, he was moved from Iran to Pakistan for the seal team to eliminate.
However, Iran double crossed the USA and move Bin Laden back to Iran and double crossed Obama.
That is why "Bin Laden's" body was "buried at sea" so no one would know the truth except seal team six of course and they were eliminated by stinger missiles that were tied to Benghazi.
The pallets of cash was hush money so the world would never know that Bin Laden is still alive and well and living in Iran.
BTW Muslims don't bury their dead at sea because their feet must be pointing towards Mecca and burial at sea prevents that and so is avoided except in extreme emergencies.