Studies of Pitcairn Islands marine environment revealed a rich biodiversity of fish , coral and algae . Pew Research Group hope to turn British Overseas Territory into a vast marine reserve . Should the UK government back the plan , the reserve would become the largest of its kind in the world , covering an area of more than 800,000 square kilometers ( 300,000 square miles ) , according to the Pew Environment Group . Around 200 marine species exist but scientists believe many more remain undiscovered . ` ` These places allow us to know what the ocean was like before heavy human impacts , '' expedition report says .
Studies of Pitcairn Islands marine environment revealed a rich biodiversity of fish , coral and algae . Pew Research Group hope to turn British Overseas Territory into a vast marine reserve . Around 200 marine species exist but scientists believe many more remain undiscovered . ` ` These places allow us to know what the ocean was like before heavy human impacts , '' expedition report says .