HOKKAIDO, Japan, May 7 (TNSjou) -- Hokkaido University issued the following news release: * * * Rare Footage of Elusive Sea-floor Creatures and Backward-Swimming Fish captured by Compact Video-Acoustic System in Greenland Researchers have deployed a portable, non-invasive monitoring system on the seafloor of a remote Greenlandic fjord to observe Arctic biodiversity without disturbing the ecosystem. * Arctic glacial fjords are hotspots of marine life, yet their seafloor environments remain some of the least explored regions on Earth. Their  more PR