Speleologist .
A person who studies caves is called a speleologist or a caver. They study the physical structure, formation, and geological features of caves, as well as the life forms that inhabit them.
A geographer is a scientist who studies geography.
A scientist who studies floods is called a hydrologist. Hydrologists study the distribution, movement, and properties of water on Earth.
A mycologist is a scientist who studies molds and other fungi.
An environmental scientist is a scientist who studies the environment and its interaction with living organisms. They may specialize in areas such as ecology, conservation, climate change, or pollution.
The name for someone who studies caves is a speleologist or a spelunker.
The name of a scientist that studies sports is called a sports scientist.
An arachnologist
A virologist is a scientist who studies viruses.
A scientist who studies animals is called a zoologist.
A scientist who studies radioactivity is called a nuclear physicist or a radiologist.
A scientist who studies animal life is a zoologist. There is no particular name for a scientist that specialises in platypuses.
A person who studies caves is called a speleologist or a caver. They study the physical structure, formation, and geological features of caves, as well as the life forms that inhabit them.
Underwater Spelunking
The name for this type of scientist is a teuthologist
This answer is a entomologistA scientist who only studies fish is called an ichthyologist.
Astronomer