Terminology

The concept of an attack implies a will to harm the targeted living being. Yet even when a shark goes after a human being for predatory purposes, nothing suggests that it holds any particular grudge against its target.

The term “bite” is far more relevant, because it is neutral and factual.

The word “attack” might arguably fit motivations such as self-defense or anti-predation, when a shark bites a source of danger that has assaulted it, or in anticipation of a potential assault. But even in those cases, the shark is primarily seeking its own protection, not the harm of its actual or potential aggressor.