Australia has denied being an outlier at a Pacific leaders' forum, where mention of coal was removed from the final statement and the concerns of smaller island nations were not accepted.
Subscribe now for unlimited access.
$0/
(min cost $0)
or signup to continue reading
Mr Morrison and his Pacific counterparts emerged from negotiations on Thursday after more than 12 hours.
The final communique makes no mention of a transition from coal, but reaffirms climate change as the single greatest threat to the livelihoods, security and wellbeing of people in the Pacific.
The statement was paired with a declaration on climate change, which calls on G7 and G20 members to "rapidly implement their commitment to phase out inefficient fossil fuel subsidies".
Speaking at the official closing event, Tuvalu prime minister and forum chair Enele Sopoaga described the negotiations as a "tough, difficult struggle".
"There will be a compromised position and that sort of thing, but I want to encourage drawing attention of the Pacific people," he said.
"It is very important we remain to keep the canoe buoyant. There is no point in having a canoe half full. It will not deliver anything in the long run."
Immediately after negotiations wrapped up Mr Sopoaga hinted to reporters that Australia was alone in not accepting a climate declaration from the smaller island states.
The declaration calls for an immediate global ban on the construction of new coal-fired power plants and coal mines.
But the language of the documents amounts to all 18 nations endorsing the smaller islands' calls "with qualification".
Mr Morrison rejected the assertion from Tuvalu's leader.
"What the small island states agree when they come together is not binding on all other members of the forum," he told reporters.
"No member state has expressed anything about what their possible qualifications are."
The prime minister said the impact of climate change and rising sea levels was not a "theory, it's real".
"It's happening to them right now and has been for some time."
The statement on climate change makes replenishing the UN's Green Climate Fund an option, but doesn't call for its prompt replenishment as the statement from smaller states did.
Mr Morrison says he has no plans to help top up the Green Climate Fund, arguing that some Pacific nations find it frustrating.
"I want to invest directly in helping the Pacific family here. I don't need to send a cheque by Geneva or New York or wherever it has to go."
Australian Associated Press