Great Seahorse
Hippocampus kelloggi
- Usual depth84–139 m
- Water temperature23–29 °C
- Best monthsFebruary, July, and November
- How commonRare
Photo credit: (c) anonymous, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
About this species
The great seahorse, also known as Kellogg's seahorse, is a species of fish in the family Syngnathidae. It is one of the largest of the 54 species of seahorse.
Text from the Wikipedia article “Great seahorse”, licensed CC BY-SA 4.0. Read the article
Where and when
Where it has been recorded
Worldwide
Loading the map
Best months
Worldwide (open data)
- January: 6 records
- February: 14 records
- March: 11 records
- April: 13 records
- May: 6 records
- June: 13 records
- July: 14 records
- August: 9 records
- September: 3 records
- October: 12 records
- November: 22 records
- December: 13 records
Depth and water temperature
Depth
Mostly recorded at 84–139 m · Deepest record: 139 m
Water temperature
Recorded in surface water of 23–29 °C
Photos
(c) Ewout Knoester, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist 
(c) portioid, some rights reserved (CC BY) · CC BY · iNaturalist
Names and classification
- English
- Great Seahorse, Kellogg's Seahorse, Offshore Seahorse
Names in 4 more languages
- Spanish
- Caballito de Mar Mayor
- Japanese
- O-umi-uma, Oumiuma, オオウミウマ
- Thai
- ม้าน้ำยักษ์
- Simplified Chinese
- 克氏海馬, 大海馬, 大海馬(克氏海馬), 大海马(克氏海马), 海馬, 苏伊士海马
Other scientific names: Hippocampus suezensis
Similar species
Bargibant's Pygmy SeahorseHippocampus bargibanti
Thorny seahorseHippocampus histrix
Spotted seahorseHippocampus kuda
Half-spined SeahorseHippocampus spinosissimus
Flat-faced SeahorseHippocampus trimaculatus
- Big-head Seahorse
Hippocampus angustus
Sources and credits
Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).
- Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
- Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
- Conservation status as published by GBIF (IUCN Red List).
- 119 open-data records from 1908 to 1996.
- Species data updated October 30, 2026.
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