Fishdom H2O: Hidden Odyssey is an online game at 43g.Com. You can play Fishdom H2O: Hidden Odyssey in your browser for free.Help Jennifer, a young marine biologist, win the Best Aquarium Award. Dive to the bottom of the sea and find various hidden items in numerous eye-teasing locations. Get cash to buy cute sea creatures and beautiful ornaments and create three unique aquariums of your dreams!