"Presumed" human remains were recovered from within the shattered hulk of a submersible that imploded while on a voyage to the century-old wreck of the Titanic earlier this month, the U.S. Coast Guard said on Wednesday.

Movie director and submersible maker James Cameron said on Thursday he wishes he had sounded the alarm earlier about the submersible Titan that imploded on an expedition to the Titanic wreckage, saying he had found the hull design risky.