VIKTOR POSNOV

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Horseshoe Crabs Mating.jpg

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Three male horseshoe crabs attempt to mate with the larger female during the sunset. Horseshoe crabs are considered living fossils, the earliest fossils of animals are roughly 450 million years old. Horseshoe crabs have two compound lateral eyes, a pair of median eyes that are able to detect both visible light and UV-light, a single endoparietal eye, and a pair of rudimentary lateral eyes on the top. There is also a pair of ventral eyes located near the mouth, as well as a cluster of photoreceptors on the telson. Horseshoe crabs do not have hemoglobin in their blood, but instead use hemocyanin to carry oxygen. Because of the copper present in hemocyanin, their blood is blue.

Taken in Everglades NP, Florida
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Viktor Posnov
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4741x3140 / 10.5MB
Contained in galleries
12 South Eastern States
Three male horseshoe crabs attempt to mate with the larger female during the sunset. Horseshoe crabs are considered living fossils, the earliest fossils of animals are roughly 450 million years old. Horseshoe crabs have two compound lateral eyes, a pair of median eyes that are able to detect both visible light and UV-light, a single endoparietal eye, and a pair of rudimentary lateral eyes on the top. There is also a pair of ventral eyes located near the mouth, as well as a cluster of photoreceptors on the telson. Horseshoe crabs do not have hemoglobin in their blood, but instead use hemocyanin to carry oxygen. Because of the copper present in hemocyanin, their blood is blue.<br /> <br /> Taken in Everglades NP, Florida