Someone who studies evolution is called Evolutionary Biologist.
Someone who studies cryogenics is called a cryogenicist.
Yes, someone who studies bats is called a chiropterologist.
Marine biologist
Marine biologist. Actually, a Marine Biologist is someone who studies marine organisms (plants, oceans, and animals), but someone who studies MAINLY marine mammals is a marine mammalogist.
A person who studies the sea and the ocean is called an oceanographer.A person who studies sea animals is a marine biologist.A person who studies sea plants is a marine botanist.
Someone who studies the planet would be called a Geologist. Someone who studies Space would be called an astronaimist. Both work together to gather information about earth.
Someone who studies planetary systems is called a planetary scientist
an areologist
Zoologist
Astronomer
I call them "scientists" but their called oceanographers =D