Most observed native hydrozoans
Native to the US, by how plants support them, most observed first.
Other species All
117 native species with no plant ties on record, most observed first.
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By-the-wind Sailor
Velella velella
23,267 observations
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Portuguese Man O' War
Physalia physalis
11,858 observations
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Blue Button
Porpita porpita
5,071 observations
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Indo-Pacific Man-O-War
Physalia utriculus
5,050 observations
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Victoria's Crystal Jelly
Aequorea victoria
3,989 observations
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Christmas Tree Hydroid
Pennaria disticha
2,662 observations
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Branching Fire Coral
Millepora alcicornis
1,817 observations
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Red-eye Medusa
Polyorchis penicillatus
1,358 observations