An upcoming episode of a nature documentary has revealed that many people believe fish to be transgender. The documentary Blue Planet II, narrated by David Attenborough, will depict the sea life in a very controversial way. A clip of this Sunday’s first episode has been released which follows the path of an Asian Sheepshead Wrasse, a fish with the ability to turn from male to female and vice versa, like clownfish. However the scientists are still unable top explain why it happens. Several reports on the upcoming episode have called the natural phenomenon “gender-bending” and have described the fish as transgender. Although, as far as we know, fish have biological sex (they are born with male or female features) but there is no evidence that fish can self-identify as male, female or neither. And gender, in contrast to sex, is a role in society (fish are not social organisms) and self-identity. Trans people slammed BBC for it, and those who oppose trans rights challenged it for a ‘left-wing brainwashing’.