During the dead season , what do islanders do ?

Go to other Caribbean islands or go to the US. When the get a paycheck they send the money home. If you lived in the Caribbean you might only see your father 4 months out of the year.

When a lake, river or other aquatic  system  becomes  eutrophic, it can have serious negative effects on other organisms like fish, birds and even people.if an algal bloom is so bad that it causes wide-spread death  in  the  water, the organisms that die will all sink to the bottom and start to decompose.