Wladimir Klitschko and his family were SAVED by emergency responders in Spain on Monday -- after the luxury yacht they were traveling on caught fire at sea!!
The rescue was all captured on video ... as firefighters and other emergency workers rushed to the boat off the coast of Mallorca around 2 AM and sprayed fire suppressing foam on the boat.
"The boat was on fire, we're hanging out outside," the former boxing champ says on the dramatic video ... "We're in the sea getting rescued from the Mallorcan/Spanish fire department.