aquaticist
There is no specific name for a person who studies squids. A marine biologists is someone who studies ocean life.
The name for someone who studies caves is a speleologist or a spelunker.
A psychologist is the proper name for someone who studies the mind.
Pathologist
An Archaeologist
the water boatman scientific name is Arctocorixa interrupta
The scientific name of water strider is Gerris Remigis
A mycologist is a scientist who studies molds and other fungi.
The scientific name for a water boatman is a Corixa.
The scientific name of water hyacinth is Eichhornia crassipes.
The water moccasin's scientific name is Agkistrodon piscivorus
The scientific name of water leaf is Talinum triangulare.