No, it’s our environment. Some people watched way too much Steve Irwin.
I can tell you’ve never spent much time in or around the ocean.
Me, I’ve lived on the Florida coast for almost 60 years.
Trust me......it is NOT “our” environment.
And if you don’t believe me you can ask any shark attack victim.....one that survived any....they’ll tell you the same.
Maybe someone needs to watch a little MORE Steve Irwin.
It’s a shared environment.
We can make the aquatic environment of the Great White Shark our environment, but most people such as swimmers, surfers and divers enter the environment of the Great White Shark without preparing it and making it "our environment".
We can make it our environment by supplying ourselves with "bang sticks" or other defensive weapons, or we could hunt and kill sharks if we had the will to do so.
But in the absence of those things, it IS their environment.
There is an illustrative exercise that is often practiced by teachers and lecturers who pose the following questions to their audience:
TEACHER: What is the fastest land animal on Earth?
STUDENT: The Cheetah!
TEACHER: Good answer. What is the highest flying creature on Earth?
STUDENT: The Vulture!!
TEACHER: Yes...they fly very high. What is the deepest diving mammal on Earth?
STUDENT: The Sperm Whale!
TEACHER: What is the fastest flying creature on Earth?
STUDENT: The Peregrine Falcon!
TEACHER: Uh huh. Very fast. What land animal can lift the greatest weight?
STUDENT: The Elephant!
TEACHER: Those are ALL excellent animals. But they are all wrong. The fastest land animal is man. The highest flying creature is man. The deepest diving mammal is man. The fastest flying creature is man. The land animal that can lift the most weight is man.
I have seen several cases where this kind of Socratic method was used on both kids and adults, and I always enjoy the reaction when they audience is told that man is all of those things.
There is ALWAYS a universal reaction of "Ohhh...that's RIGHT. I didn't think of it that way..."
So, I disagree with you in that respect in the context that it is "our environment, but I agree with the context of the teacher, that ANY environment is OUR environment...should we choose to make it so.
However, venturing into THEIR environment without preparing that, er..."battlefield" to make that environment OURS, we are simply soft, crunchy, and even tasty sojourners to THEIR environment!
Do explain how the ocean is our environment.