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Which animal has the biggest eyes?

animalsocean

Quick Answer

The colossal squid, whose eyes can measure about 27 cm across — roughly the size of a football.

The Full Story

The colossal squid of the Southern Ocean has the largest eyes of any known animal, with each eye measuring around 27 centimetres in diameter. The giant squid has eyes of a similar size. Scientists think such huge eyes help these squid spot the faint glow of bioluminescent plankton disturbed by an approaching sperm whale, their main predator, in the dark depths. The colossal squid’s eyes even have built-in light organs that may work like headlights. Among land animals, the ostrich has the biggest eyes, about 5 centimetres across, which are larger than its brain.

Key Facts

1.A blue whale, the largest animal, has eyes only about 15 cm across.
2.Colossal squid live at depths of up to around 2,000 metres.
3.Tarsiers have the largest eyes relative to body size of any mammal; each eye is about as big as its brain.

YouTube Angle

Suggested video title for this topic:

"Eyes the size of footballs — how the colossal squid sees in the dark"