Tuvaluans determined to stay put are fighting challenges from rising tides to depopulation

Talua Nivaga is determined to save his homeland.

As the co-founder of Tuvaluan youth climate group Fulifafou, he's watched the rising seas encroach and swallow parts of his island nation.

While many Tuvaluans are considering migrating to escape the worsening effects of climate change, Mr Nivaga has told the ABC he is resolute in staying and fighting for the future of Tuvalu.

"What is an absolute and certain need of the people is action — there's so much talk that has been done," he said.