Mirrors have revealed something new about manta rays – and it reflects badly on us

Humans make huge use of marine vertebrates, but manta rays may pass the self-awareness test and fish potentially could too. Ethically, where does that leave us?As a shark biologist, I enjoy nothing more than going scuba diving with sharks in the wild. However, I realise it’s an immense privilege to do this as part of my work – and that for the vast majority of people experiencing the underwater world in such a way is simply not possible.
Nevertheless, even without the aid of an air t