Howdy,
In the java version I've found no practical way to explore underwater in survival mode, but there are wet suits. In creative mode I've also found many unreachable underwater ruins...
In the new version will there be some method of being underwater for more than just a few moments in survival mode? An aqualung or diving bell with hose & compressor? I would even be thrilled with an air filled balloon or a long straw if need be. 
Thank you
