Bill Eberlein has been diving for more than 15 years, regularly hunting and finding 6-inch-long shark teeth, but never a full jaw.

That is until he found a prehistoric mastodon jaw at the bottom of the Intracoastal Waterway near Richmond Hill in Savannah.

Eberlein told the Savannah Morning News it was his first time seeing a 60-pound jaw. Mastodons are extinct mammals that bare a resemblance to elephants.

“I was doing my normal dive when I felt what I thought was a fossilized log, but when I felt the molars I knew I had found something very rare,” he told the paper.

Eberlein searches for extinct shark jaws professionally and was 45 feet deep in water when he found the jaw.

“I have found individual mastodon teeth occasionally in the past, but this is very exciting,” he told the paper.

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