Roblox Fish It has around 11 islands, and each one features their unique flora and fauna. Along with the visible islands that you can reach by boat, there are some secret, hidden places. These places require special gear to access, and they can reward you more than fishing on regular islands. You can catch Legendary fish in these secret places and easily make millions of coins. However, an entry fee is required. Here is how to access the secret hidden water location in the Roblox Fish It game.
Lost Isle Secret Underwater Location

The secret fishing location is on Lost Isle. You will need a jet ski or speed boat to reach the spot fast. Walk to the backside of the island—purchase Diving Gear for 75K Coins. Go to items and select the gear. Then click anywhere to wear it. Then jump into the water and use your mouse to control the swimming direction. There are three hidden locations below the water.
- Sisyphus Statue – Fishing Spot.
- Angler Rod Hall – Buy for 8M Coins.
- Treasure Room – Legendary Fish Location.
When you swim down enough, you will see two halls, and one is the deep pit, deeper in the ocean. The last one is a Treasure Room where you can fish Legendary Fish like Synodontis. Check out our detailed Roblox Fish It Fish Index for more info on Legendary fish and their locations.

Fishing here for half an hour with you, a decent rod + bait combination can easily give you between 10k to 20k coins. Much better than fishing on regular islands. Also, you will have more chances to get Legendary Fishes here if you have enough luck boost.







