The Swallowtail Aglaja (Chelidonura hirundinina) is not a nudibranch. It's a Headshield Slug found in the Indo-West-Pacific & Caribbean regions. It's colourful, making it popular with scuba-diving photographers.
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Swallowtail Aglaja
Chelidonura hirundinina
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| Scientific Rank | |
| Kingdom: | Animalia |
| Phylum: | Mollusca (Mollusks / Molluscs) |
| Class: | Gastropoda |
| Order: | Cephalaspidea (Slugs (Headshield) & Bubble Snails) |
| Family: | Aglajidae (Aglajidae) |
| Genus: | Chelidonura (Chelidonura) |
| Species: | Chelidonura hirundinina |
| Size | |
| Average Size: | 3 centimetres |
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