...Alexander Foster Crosman, naval officer, born in St. Louis, Missouri, 11 June 1838; died in Greytown, Nicaragua, 12 April 1872, was appointed to the U.S. naval academy from Pennsylvania, and graduated in 1855. He was attached to the frigate "Congress," of the Mediterranean squadron, in 1856-'8, made master, 4 November 1858, served on the Paraguay expedition of 1858-'9, and was promoted to lieutenant in 1861. He commanded the "Somerset," of the East gulf squadron, in 1862, was made lieutenant commander on 16 July of that year, and served in the South Atlantic blockading squadron during the rest of the war, most of the time in the "Wabash." He was with the naval brigade of that squadron on general Hatch's expedition to sever the railroad from Charleston to Savannah, and co-operated several times with the army on Stono River, engaging Fort Lamar once. He was honorably mentioned in Commander George H. Preble's official report of 10 January 1865. After the war he served on the "Ossipee," the "Onward," and at Portsmouth navy yard. He was commissioned commander in 1870, ordered to the command of the isthmus surveying expedition in January 1872, and was drowned in the harbor of Greytown. At the time of his death he was preparing a book on seamanship.
-Appleton's Cyclopedia of American Biography
The preponderance of the evidence, at this point, suggests that Crosman drowned rather than was eaten by sharks. And you don't know how difficult that sentence was for me to type. I love the Crosman-eaten-by-sharks story. Love it. It's either my favorite or second favorite 19th century St. Louis baseball-related story. But...I now have a couple of sources that state Crosman drowned. I guess I'm going to have to put together a post showing all of the evidence and tell you the story of how I came across the eaten-by-sharks story.
And take a look at that photo of the Wabash at the top of the post. According to Naval History & Heritage, the photo was taken "from the deck of the monitor USS Weehawken, in Port Royal harbor, South Carolina, 1863." There is a very good possibility that Crosman was on the ship when the photo was taken. Obviously, I have no evidence of that but it's a good possibility.