The Deep (1977)
A pair of young vacationers are involved in a dangerous conflict with treasure hunters when they discover a way into a deadly wreck in Bermuda waters...
The Deep - watch online: streaming, buy or rent
Currently you are able to watch "The Deep" streaming on Amazon Prime Video. It is also possible to buy "The Deep" on Google Play Movies, YouTube as download or rent it on Google Play Movies, YouTube, Microsoft Store online.