Flotsam Sea Hare

About this species

Stylocheilus longicauda is a species of gastropods belonging to the family Aplysiidae.

Text from the Wikipedia article “Stylocheilus longicauda”, 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: 15 records
February: 27 records
March: 16 records
April: 26 records
May: 14 records
June: 12 records
July: 17 records
August: 14 records
September: 23 records
October: 34 records
November: 31 records
December: 18 records

Depth and water temperature

Depth

Mostly recorded at 0–18 m · Deepest record: 28 m

0–10 m: 22 records
10–20 m: 6 records
20–30 m: 3 records

Water temperature

Recorded in surface water of 15–30 °C

14–16 °C: 2 records
16–18 °C: 0 records
18–20 °C: 2 records
20–22 °C: 45 records
22–24 °C: 3 records
24–26 °C: 35 records
26–28 °C: 28 records
28–30 °C: 37 records

Photos

(c) LPB, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Srichakra Pranav Tamarapalli, some rights reserved (CC BY-SA) · CC BY-SA · iNaturalist
(c) klukoff, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Dan Schofield, some rights reserved (CC BY) · CC BY · iNaturalist
(c) João D'Andretta, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Flotsam Sea Hare, Blue-ring Sea Hare, longtail seacat

Names in 3 more languages

French: Lièvre de mer citron
Japanese: クロスジアメフラシ, ヒメミドリアメフラシ
Simplified Chinese: 長尾柱唇海兔

Other scientific names: Aplysia citrina, Aplysia longicauda, Aplysia nudata, Stylocheilus citrinus

Similar species

Spiky Sea Hare
Stylocheilus striatus
California seahare
Aplysia californica
Ocellate Sea Hare
Aplysia argus
Large-spotted sea hare
Aplysia dactylomela
Sucker-foot Sea Hare
Aplysia juliana
Aplysia kurodai

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).
229 open-data records from 1825 to 2026.
Species data updated October 31, 2026.