And besides the inherent dangers of even attempting it there is no need to waste any resources to try and recover their “bodies”, because even though they haven’t specifically come and said it, there won’t be “bodies” to recover.
By the time it reached the Titanic wreckage, the Titan submersible would have been facing a pressure of between 375 and 400 atmospheres.
The water pressure at 12,500 feet (3,800 meters) below the surface at the site of the Titanic wreck is roughly 400 atmospheres or 6,000 pounds per square inch. The sudden change in pressure during an implosion would cause immediate trauma to the human body, essentially disintegrating it, in other words break it up into small parts. What’s left of them should be left in their internal grave with the other victims of the Titanic.