Watch Adventure Harbor (2019) HD Full Movie Free on solarmovie.do. Watch Adventure Harbor (2019) online free. Four tweens develop a life-long friendship when they discover an injured mystical sea creature. They...Four tweens develop a life-long friendship when they discover an injured mystical sea creature. They bravely go to extreme lengths to protect her from selfish scoundrels set on capturing her and even harming her for their own profit.