My daughter is doing work about being a pirate this is a project, we are just finding it hard to find a?

part on where she has to include a message in a bottle from someone stranded on the island after a failed treasure finding attempt ?
also

She could be part of an expedition to a small island in
Atlantic seas. Something hits the starboard side of the
ship. Fishing the small green glass bottle out of the water
she finds a message inside. It is asking for help from
someone who was shipwrecked on the very same small island they are heading for to look for some pirates hidden treasure. Make up a notorious pirate name who stalked the seas centuries ago. A part of the map said to belong to the pirate showing buried treasure on the island. The person who is shipwrecked on the island has another part of the map that belongs in his family. A typical curse
attached to any hidden treasure can be unexplained
illnesses if the treasure is touched, misfortune to all who
steal the treasure, stuff like that. Hope this helps.

http://www.piratesinfo.com/legend/treasure/oakisland.html

This might help with some more ideas.

Civil War Hut Site treasure find