See the full article for videos of the descent and "water landing"
"SPACEX LAUNCHED ITS 20th rocket of the year just two days after lofting a record 64 satellites into orbit. On this flight, a brand-new Falcon 9 hoisted a Dragon spacecraft into orbit, bound for the International Space Station. But unlike Monday’s textbook touchdown, today’s landing didn’t quite go as planned.SpaceX’s Failed Landing Still Ended With a Clean Plop | Wired
The Falcon’s first stage, the largest and most expensive portion of the rocket, was expected to navigate itself back to land after launching the Dragon spacecraft. But instead of gently touching down in the middle of SpaceX’s designated landing pad, the booster made an unscheduled plop into the Atlantic Ocean, just off the Florida coast. Video footage shared shortly after the incident shows the booster spinning out of control as it headed towards land."