I have a magazine with 3 or 4 pages dedicated to the "Amfibi Deniz Piyade" or whatever that means.
It says its bsaed on the USMC and uses BTR70 and BTR90s
Busos Tacticos in a Military Exercise. They had to swim with full equipment, dive for 2 Hours, swim alot untill they reach a Boat "ARA Punta Mogotes", then walk for hours in full night, with full equipment, and thats all
the Operation took an entire day.