A paleontologist would generally study paleontology.
An environmental veterinarian would study this particular example. Veterinarians study animals, and environmental vets study the effects a particular environment has on them.
Ornithologist.
Myrmecologists studt ants!
Who studies fossils.
Cetology is the branch of marine science associated with the study of cetaceans, which is the order that contains whales, dolphins, and porpoises. Logically, a scientist who studies whales is therefore a cetologist.
Volcanologist.
A paleontologist would generally study paleontology.
The type of investigation would be fieldwork.
a physicist
Geologist - specifically a 'Vulcanologist'
zoologists
An archaeologist
Geologists study the Earths surface
all of them
BIOLOGISTS ...
oceanagrapher