Experiments on cuttlefish are cruel | Letter

Peta's Julia Baines deplores the supergluing of 3D glasses on to the sensitive marine animals

The recent experiments on cuttlefish (Cuttlefish given 3D glasses for test of how they judge distance, 9 January) are indefensible, curiosity-driven nonsense that benefit only the experimenters who make a living from them and from ignoring what we already know about awe-inspiring cuttlefish.

Supergluing Velcro to the delicate dorsal surface of the animals' heads, withholding food for several days, forcing them to wear 3D glasses and subjecting them to video images to prove something we already knew about the species is not only unnecessary, but also cruel.