1. Eledone cirrhosa. Eye lens, 7mm diameter. Large, highly-developed eyes have structure, including lens, similar to mammals. Variation in arrangement of elements, arising from separate evolution, led to lack of mammalian blind spot. 1974. Orkney.
2. Eledone cirrhosa. Eye lens, 7mm diameter. Large, highly-developed eyes have structure, including lens, similar to mammals. Variation in arrangement of elements, arising from separate evolution, led to lack of mammalian blind spot. 1974. Orkney.

Eledone cirrhosa. Eye lens, 7mm diameter. Large, highly-developed eyes have structure, including lens, similar to mammals. Variation in arrangement of elements, arising from separate evolution, led to lack of mammalian blind spot. 1974. Orkney.