Subscribe now

Earth

A very pregnant female ray had to fend off four courting males

By Maria Bolevich

22 March 2018

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Dealing with suitors while pregnant

Scott Tindale

For the first time, giant devil rays have been filmed courting in the waters of New Zealand. It seems males start pursuing females while they are still pregnant.

In March 2017, recreational fisherman Scott Tindale of the International Game Fish Association in Albany saw a heavily pregnant female giant devil ray (Mobula mobular) being pursued by four mature males. The female swam ahead of the males and repeatedly changed direction, as if trying to throw them off. She mostly swam at or near the surface, preventing the males from getting on top…

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with New Scientist events and special offers.

Sign up

To continue reading, subscribe today with our introductory offers

Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop