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This Male Paper Nautilus - Argonauta hians is very small in size around 6-8 mm. It was hitching a ride on something else when I first saw it, this is a typical of their behaviour. They have also been seen to hitch rides on Jellyfish and other floating animals in blue water. Male Paper Nautilus do not have shell unlike the female. Females are usually march larger in size. An interesting fact about Argonauts - The males only mate once in their short lifetime, whereas the females are iteroparous, capable of having offspring many times over the course of their lives.
Lat: 13.72, Long: 120.88
Spotted on Jan 2, 2019
Submitted on Jan 4, 2019
and 14 other people favorited this spotting