PUFFER FISH

Form          :  Marine fish.

Found       :  Mostly in THAILAND and Florida , USA

USP             : 

• Second most poisonous vertebrate on earth , after golden frog.
• Inflates itself as shown in the picture when faced with threat.
• It is a Japanese food recipe.

GREAT BLUE HOLE

Location                     : Lighthouse Reef , Belize
Form                            : Large submarine sinkhole
Parameters               : 300 metre diameter , 124 metre deep
USP                              : 

• Part of Belize Barrier River Reef System 
• UNESCO World Heritage Site