seaslug or nudibranch (pseudoceros bifurcus) in the filipino sea 9.11.2011

philippines sea fish dive animal life marine deep discover swimming nature climate environment travel view sight scenery biology color tourism stunning magnificent spotting observe beautiful domestic region islands tropics wonderful fascinating impressive majestic peaceful creature species underwater ocean wildlife habitat ecosystem science researcher asia individuals plat worm pseudoceros bifurcus blue seaslug nudibranch filipino 9 11 platworm ground