semaeostomeae

“Fried Egg Jellyfish” (Phacellophora camtschatica)

Also known as the “egg yolk jellyfish”, the fried egg jellyfish is a species of Phacellophorid jellyfish (it was formerly considered a Ulmarid) which can found in cool-water areas of most of the worlds oceans. Like most jellyfish P. camtschatica is a pelagic drifter, moving with the current feeding on a range of zooplankton and occasionally other jellyfish. Because P. camtschaticsa has a relatively weak sting it is generally is a home for small crustaceans which ride on its bell and steal food from it. 

Classification

Animalia-Cnidaria-Scyphozoa-Semaeostomeae-Phacellophoridae-Phacellophora-P. camtschatica

Image: Tom Thai

Blue Jellyfish (Cyanea lamarckii)

Also known as the bluefire jellyfish, the blue jellyfish is a striking species of Cyaneid jellyfish which is distributed throughout the North Atlantic where it occurs off the west coast of Scotland, the North Sea, and the Irish Sea. Like most jellyfish species, blue jellyfish are predatory and will feed on passing zooplankton which hare dispatched via their stinging nematocysts. 

Classification

Animalia-Cnidaria-Scyphozoa-Semaeostomeae-Cyaneidae-Cyanea-C. lamarckii

Image: Malene Thyssen

2

“Big Red” (Tiburonia granrojo)

…a species of Ulmarid jellyfish that is the sole member of the subfamily Tiburoniinae. Tiburonia granrojo has been observed in deep waters (around 600 to 1,500 meters) across the Pacific Ocean, including in the Sea of Cortez, Monterey Bay, Hawaii, and Japan. Tiburonia granrojo can grow up to 75 centimeters (30 in) in diameter and in place of the long tentacles found in most other jellyfish it has thick oral arms. Only 23 specimens of Tiburonia granrojo have ever been observed, and only one has been collected (a small [15 cm] specimen) for study. 

Classification

Animalia-Cnidaria-Scyphozoa-Semaeostomeae-Ulmaridae-Tiburoniinae-Tiburonia-T. granrojo

Image(s): NOAA/Monterey Bay Aquarium Research Institute

Aurelia labiata

…is a species of “Moon Jellyfish” (Aurelia spp.) which is known to inhabit the northern Pacific Ocean, ranging from the eastern coast of Japan to the coast of California. Like other jellyfish A. labiata is predatory, using its stinging nematocysts to dispatch small passing invertebrates. A. labiata is very similar to its more common relative A. aurita, and will even occasionally occur in the swarms of A. aurita. However, A. labiata is known to be larger and has a dark brown margin, and well branched subumbrellar canals (canals on the underside of the bell)

Classification

Animalia-Cnidaria-Scyphozoa-Semaeostomeae-Ulmaridae-Aurelia-A. labiata

Image: Spacebirdy

Fried egg jellyfish / サムクラゲ

External image

Phacellophora camtschatica

Fried egg jellyfish
It is distributed in cold water of North Pacific. サムクラゲ
北太平洋の冷水域に生息。


Animalia Cnidaria Scyphozoa Semaeostomeae Ulmaridae
動物界 刺胞動物門 鉢虫綱 旗口クラゲ目 ミズクラゲ科

The photo taken at Aquaworld Oarai, Ibaraki, Japan.