Not to be preachy, or anything, but, if you ever find a "brick of an unknown substance" floating in the ocean, you should "just say no" to snorting it. Especially if you are a 53-year-old on a fishing trip.

Because, well: You will probably die. Floridian Thomas Swindal did, after finding, and snorting, a brick of unknown substance that he'd found in the water while fishing.

At least, that's his brother Kenneth—the only other person on the boat—says happened:

They ended up tossing the package into a bait well until a short time later, when Kenneth said he turned around and saw his brother snorting some of the substance.

Kenneth told investigators that about 90 minutes later, Thomas began running around the boat, throwing things into the water, including a cell phone and a VHF radio. Thomas also picked up knives, pliers and a gaff and removed the cowling from the engine, which fell overboard and sank, leaving the brothers stranded.

To avoid further dangers, Kenneth said he tossed all remaining sharp objects into the water, as well as the package of the mysterious substance.

The brothers were rescued by a passing boat, and Thomas died later in the hospital. And, hmm, well, yes, while there are roughly 400 suspicious things about this, I suppose I "believe" Kenneth, in the sense that I "believe" that this is the best story he could come up with. (Alternately, maybe this is actually what happens when a drug-abstaining 53-year-old snorts raw uncut cocaine that's been floating in the ocean for God knows how long?) Police are waiting on an autopsy report—which may be able to identify the substance in the brick—to determine cause of death.

But. Regardless of what really happened out there, and what was in the brick, it seems like good policy: Do not snort ocean-bricks.