FishVille: A Discovery Log Guide for Treasure Hunters
Below we've got a list and tips for everything you need to know to get all your treasures. The easiest thing you can grab is the "Deep Sea Coral," but it's going to cost you 56,250 Coins.
Tip: Buy with Sand Dollars or find them inside Mermaid Mystery Boxes, which are free gifts. They're NOT on the Free Gifts page. Instead, click on the listing to send the boxes to friends.
Precious Shells: Blue Shell, Pink Shell, Purple Stombus, Spikey Shell, and Wavy Shell
Tip: You can get these only by redeeming "Fish Love". This involves regularly feeding and caring for your fish. When you do, you can collect their "Love" and buy items with it. For more info, please read the Fish Love guide.
Deep Sea Fauna: Bamboo Coral, Bubble Gum Coral, Deep Sea Coral, Gibsmithia, and Picasso Sponge
Tip: Grab the Deep Sea Coral at the store for 56,250 Coins, but you've gotta look at the "Deep Sea" or "Decor" section, as it won't be under "Plants". The first two items can only be found by collecting enough "Nautilus Shells" from friends. There should be a "Nautilus Shell Stash" icon on the lefthand side of your game window. Click on that to learn more. The last two coral pieces are on the Free Gifts page.
For the Fish Collections, check out:FishVille: A Discovery Log Guide for Ichthyologists