Delfiniphobia
The fear of dolphins is delfiniphobia.
A phobia is an irrational fear. Since it is perfectly rational to be afraid of sharks, that would not be considered a phobia. Sharks actually are dangerous.
There is no official phobia name for the fear of vipers. However the official phobia name for the fear of snakes is ophidiophobia.
The phobia name for the fear of monkeys is Cynophobia.
The phobia name for the fear of the unknown is called Xenophobia.
There is no name for fear of olives, but lachanophobia is the fear of vegetables.
Mnemophobia is the name of the phobia related to the fear of memories
Carnophobia is the name of the phobia related to the fear of meat
Hylephobia is the name of the phobia related to the fear of materialism
Gamophobia is the name of the phobia related to the fear of marriage
Mechanophobia is the name of the phobia related to the fear of machines
Melophobia is the name of the phobia related to the fear of music.