A dead humpback whale washed up in Lido Beach Monday afternoon.

The Atlantic Marine Conservation Society team was on site to handle the body.

The estimated 27-foot long whale was seen early Monday, floating about a mile off of Jones Beach.

The Atlantic Marine Conservation Society located the whale Tuesday and began what is called a necropsy to determine why the whale died.

"This particular animal was a young male. The cause of death is going to take a little time. He appeared to be relatively healthy - he had a full stomach of fish bones," said Kim Durham.

Durham said quite often, the cause of death is blunt force trauma caused by ship strikes. She says the whales are feeding on the abundance of bait in the water and that brings the whales into the busy New York City shipping lines.

It is the eighth large whale found offshore this year, and the sixth humpback whale found dead.

Humpback whales were recently taken off the endangered list, but they are still protected.