Big-belly seahorse
- kingdom: Animalia
- phylum: Chordata
- class: Actinopterygii
- order: Syngnathiformes
- family: Syngnathidae
- genus: Hippocampus
- species: Hippocampus abdominalis
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Castlecrag
New South Wales
Australia -
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Napier
Hawke's Bay -
- Portobello
Otago
New Zealand -