The militant Palestinian group Hamas has "arrested" a dolphin discovered off the Gaza coast and accused it of being no Flipper. In fact, the organization believes the dolphin is actually an Israeli spy.
For real though: Army Radio reported that the dolphin was decked out with "spying equipment," including cameras, when it was captured by Hamas' naval unit. While The Times of Israel reports that the Israeli Navy has a fleet of "dolphin-class submarines," Hamas was definitely talking about an actual dolphin.
Israel is so often accused of animal espionage that an entire "Israel-related animal conspiracy theories" Wikipedia page exists. However, since dolphins are some of the smartest mammals on the planet, perhaps they are more likely to actually be spies than, say, the "trained sharks" that Israel allegedly used to target Egypt.