Hello all!
The photo is a Dugong at Motobu port. It's the same photo on "For The
Protection of Dugongs Offshore Okinawa(Material)" by Dugong Network
Okinawa.
http://www.okinawa-u.ac.jp/~tsuchida/Save-Dugong/album/motobu.html
Linked from this page to an article:
"Endangered mammal seen off west coast"(July 3, 2000. The Ryukyu Shimpo)
http://www.ryukyushimpo.co.jp/english/enews/e000703.html#enews_07
Many thanks
TSUCHIDA