Hatchet fish - This fish is only 1-5 inch tall fish! If you want to meet this, then you will have to dip in Pacific, Indian or Atlantic Ocean and also about 50 meters below the surface of water.
The Fangtooth- The eyes are weak and so she can't find you easily when you are looking at her. Even hunting for its food can only be done when she accidentally bump into its prey. To meet this, the sea will have to fall into a depth of 16, 400 feet!
The Goblin Shark- The goblin shark is a rare species of deep-sea shark. Sometimes called a "living fossil". The reason for that is these fishes are very hard to find. They're one of the most mysterious shark species in the sea.
Source- Dailyfacts website
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