SeaSlugs.חינניות ים עברית

Back to genus CaloriaBack to the galleryAdd a comment

Caloria militaris

Akhziv Canyon · 2023 · Photo: Boaz Liebes

Caloria militaris (Alder & Hancock, 1864)

Orange-Lindes Nudibranch

Israel · Mediterranean

Migrant species Observed: 2016–2025
Size
⁦20–30⁩ mm · max 40 mm
Depth
⁦6–30⁩ m
Native range
Indo-West Pacific (India to Australia and Taiwan)

Description

A small, slender, brightly coloured facelinid aeolid that eats hydroids. First recorded in the Mediterranean in 2016 on the Scirè wreck in Haifa Bay (as Phidiana militaris); now seen regularly in winter and spring along the Israeli coast.

Share link: https://seaslugs.org.il/species/caloria-militaris-israel-mediterranean/

Identification

Pale flesh-coloured to white body with a long tapered tail. A bright orange line along the head that forks at the front. Smooth rhinophores with a scarlet band and yellow tips; reddish-brown cerata with yellowish, white-tipped ends.

Similar species

Caloria indica has a white line between the rhinophores, ringed rhinophores and a translucent orange body.

Habitat & diet

Habitat

Kurkar reefs and wrecks, ~6–30 m; mainly winter–spring.

Food

Hydroids (Pennaria disticha, Ectopleura, Calyptospadix); in the lab also jellyfish polyps.

In the Mediterranean

  1. 2016First recordHaifa Bay, Israel (30 m, Scirè wreck)
  2. 2025Latest documented recordTel Aviv, Israel
Status
Established, seasonal (winter–spring)
Route of arrival
Lessepsian (Suez Canal), probably
Sources (3)

More observations (1)

Caloria militaris