Correct me if I’m wrong but I think it’s the first one
Answer:
By camouflaging and taking cover.
Explanation:
Another shark defense may include hiding from predators by camouflaging themselves against the seafloor or reefs. The flattened of tropical waters is a standout example in terms of cryptic coloration, although its disguise is as much to support its ambush hunting as for lying low.
The excerpt provides background information on a character as part of the exposition.
Biology is one and every is one