Corrected entry: When the balloon is inflated inside the sunken pirate ship and it resurfaces, where did all the dead pirates go? True, some had jumped into the water as the explosion occurred, but there are none who swam to shore, nor are there any bodies. Also, I doubt that the ship was under long enough for ALL the bodies to just disappear naturally.
Mysterious Island (1961)
1 corrected entry
Directed by: Cy Endfield
Starring: Joan Greenwood, Michael Callan, Michael Craig, Gary Merrill
Visible crew/equipment: When the five men are going up the mountain, a crew member is seen beside a big rock, at the bottom left of the screen. (00:33:50)
Herbert Brown: I ran away from a battle. I've been running ever since. I got caught running away.
Sgt. Pencroft: Son, your whole Union Army's been running from mine for the last three years. Now we're running away from you. You needn't feel special about it.
Question: Why did they have to build a raft when doing the work to re-float the pirate ship? The small boat that came ashore to fill their water casks wasn't damaged and could have been used. (01:10:00)
Correction: The fact that you doubt it doesn't mean in can't happen. They are in warm tropical waters, so a putrefying body would fill with bacterial gases and float away from the wreck, providing a free lunch for hundreds of species of predatory or scavenging fish, worms and crabs. The ship would be clear of bodies within days.