Identify the compound-complex sentence braden loves the ocean, and he snorkels because he is looking for different types of fish. braden loved the ocean, and he was often snorkeling, so he could find different types of fish. braden loved the ocean, and he snorkels often. looking for different types of fish is why braden loves the ocean.

A compound complex sentence is a sentence that contains 2 independent clauses and an independent clause. An independent clause is one that can stand alone as a sentence, and a dependent clause cannot and wpuld be considered a fragment alone.

Sentence 1 is the compound-complex sentence because it fits the constraints above.

Independent -
Braden loves the ocean
he snorkels
Dependent -
because he is looking for different types of fish.

Sentence 2 is a run-on.
Sentence 3 is a compound sentence.
Sentence 4 is actually simple even though it seems complex.
I hope this helps!