Hamas militants claim that they captured a dolphin that was working as a spy for Israel, according to the Times of Israel.
Hamas says the dolphin, which was caught weeks ago off the coast of the Gaza Strip, was equipped with various types of espionage equipment.
According to the Times of Israel report, this is not the first time Israel has been accused of using highly intelligent animals as spies.
Twice in recent years, Turkish media have highlighted allegations that birds tagged with Israeli university tracking devices were on espionage missions.
In 2012, an eagle with an Israeli tag in Sudan was captured and touted as a Mossad spy.
Two years earlier, an Egyptian official said Israel-controlled sharks could be involved in a number of attacks on tourists in the Red Sea.
The dolphin was arrested by Hamas.