Marine biologists use hydrophones to record underwater sounds.
"The marine biologist was looking forward to studying the octopus."
"Are you still in the marine?"
E.T. stands for extra terrestrial. Amphibians are comfortable in marine environments and terrestrial environments.
No, you do not capitalize marine biologist in a sentence. (Unless marine is in the beginning of the sentence)
This looks like a job for a marine surveyor.
The ocean is home to a diverse range of marine life, from tiny plankton to massive whales.
When writing a sentence
The researchers sent a submarine deep into the ocean to learn more about the life there.
Using petroleum in a sentence?
This is fascinating to me for multiple reasons.
The word "plankton" is a noun. An example of a sentence using the word would be: Plankton are a vital organism, as they provide food for many of the ocean's creatures.