During Japan Tsunami a strange creature was caught on camera - real footage

Seeing this video many times, to check if someone made that up or understand what it is, is no use; This is a living creature jumped from a tree, jumped out of water and disappeared into mist.\r
\r
@ minute 3:13 you see this creature changing and manifesting to show legs and a tail; and it knows its at risk of drowning so it keeps changing places to feel secure.\r
\r
In this video the creature is captured during 3 times with logic sequence to events.\r
\r
please comment on what you think this creature is..