Please tell my why this prompt is blocked by Bing's image creator then: "view from inside a shark's mouth as it hunts fish" but "view from inside a shark's mout

Please tell my why this prompt is blocked by Bing's image creator then: "view from inside a shark's mouth as it hunts fish" but "view from inside a shark's mouth as it looks for fish" is fine. A shark hunting is over the line but it can look for fish fine?