BIOLOGISTS ...
this type of scientist is called a marine biologist
A biologist is a scientist who specifically studies living organisms and their interactions with each other and their environment. A scientist is a broader term that encompasses a wide range of disciplines that involve systematic study of the natural world, including biology, chemistry, physics, and more.
zoologists
An archaeologist
A paleontologist would generally study paleontology.
Geologists study the Earths surface
Volcanologist.
all of them
An agronomist.
A paleontologist =)
The type of investigation would be fieldwork.
Immunologists: who study the immune system Ichthyologists; who study fish