Opportunity/Hidden island

This is the list of hidden island opportunity chain for unlocking a hidden island in Isla Paradiso from The Sims 3: Island Paradise. Sims can only receive this opportunity chain by asking for an adventure at a resort front desk. Upon completing the opportunity chain, Sims will be rewarded Refuge Island.

If a custom world contains a hidden island unlockable with similar method, this opportunity chain will also appear there.

The Old Sim and the Secret Island
Requirements	Availability	Rewards	Timeout
Science lab rabbit hole	Once per Sim Received from asking for an adventure at a resort front desk Refuge Island hidden island is undiscovered	Triggers Kelp! I need some! opportunity	N/A
"Ask About Refuge Island" to the target Sim.
"Oh, so it's adventure you want? Well then why are you hanging in the lobby?! You could be out searching for a SECRET ISLAND that only few have glimpsed. If you seek the unknown, talk to (Target Sim name). (Target Sim name) will set you on your way.
Notes: The Sim's relationship must be at least 20 before they accept the interaction.

Kelp! I need some!
Requirements	Availability	Rewards	Timeout
Having completed The Old Sim and the Secret Island opportunity Science lab rabbit hole	Once per Sim Refuge Island hidden island is undiscovered	Triggers Firewalk with Me opportunity	N/A
Deliver 3 kelps to the science lab.
"Aye, maybe I know about that which you speak, and maybe I don't. Maybe The Refuge exists, and maybe it doesn't - are you a true ally to this archipelago? If so, I have an ecologist friend that needs help..."

Firewalk with Me
Requirements	Availability	Rewards	Timeout
Having completed Kelp! I need some! opportunity Science lab rabbit hole	Once per Sim Refuge Island hidden island is undiscovered	Triggers Shark, a Vagrant opportunity	N/A
Firewalk successfully, then return to the science lab.
"Thanks for the help. You seem like a fine person, but are you in tune with your island spirit? Perform an act of daring mind-over-matter, and then we'll talk about the island."

Shark, a Vagrant
Requirements	Availability	Rewards	Timeout
Having completed Firewalk with Me opportunity Science lab rabbit hole	Once per Sim Refuge Island hidden island is undiscovered	Triggers Not uncharted, you LOST the chart! opportunity	N/A
Fight a shark, then return to the science lab.
"One more thing - and this is really more a favor: Roving sharks have been interrupting my sea surveys, and it's quite a bother. As an ecologist, it's extremely important to me that you punch a shark in the face. That'll teach 'em."

Not uncharted, you LOST the chart!
Requirements	Availability	Rewards	Timeout
Having completed Shark, a Vagrant opportunity City hall rabbit hole	Once per Sim Refuge Island hidden island is undiscovered	Unlock Refuge Island hidden island	N/A
Deliver the item to the city hall.
"Wow, thanks! OK, I'm convinced! Refuge Island is actually easy to find; there's an old map at town hall that will point the way. Search the dilapidated cartography section."