Zoologist
Marine biologist
Cetologist
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.
Marine biologist
A biologist studies things that are alive.
a Marine Biologist is what you would call it.
A person who studies reefs is called a marine biologist specializing in reef ecology.
I call them "scientists" but their called oceanographers =D
The kind of scientist who studies Urology would be a Biologist, since Urology concerns a biological function (urination). If you mean the kind of doctor who studies Urology, that would be a Urologist.
It depends on the type of animal, but if you are looking for the broader term of studying all animals- they would be called a zoologist. Or even a biologist but that would also include humans and particles and cells and such!
The smallest thing a biologist studies would be cells. Smaller than that you get into biochemistry.
A biologist would most likely achieve the discovery of a new species, contributing to our understanding of biodiversity and ecosystem dynamics. Additionally, they might conduct groundbreaking research that elucidates the genetic mechanisms of a particular organism, leading to advancements in fields such as medicine or agriculture. Their work often involves field studies, laboratory experiments, and the analysis of biological data to address ecological or evolutionary questions.