ELKHORN, Calif. — A man kayaking in California ended up with a unique story when a massive sea otter jumped into the boat with him.

John Koester was kayaking with his wife, Heather VanNes, to celebrate his birthday Monday in the Elkhorn Slough, near Watsonville, when they spotted a raft of sea otters in the distance.

Read the entire story here.

(Photo courtesy of Heather VanNes)