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Introduction to Jellyfish Jellyfish have been around for over 700 million years making them one of the oldest living creatures on earth. There are almost 3,000 species of jellyfish found throughout the world's oceans. From Cnidarian jellyfish, which are often referred as “true” jellyfish, to Ctenophores (comb jellyfish), Cubic Aquarium Systems have compiled this poster showing some of the most interesting species found around the globe. Moon Jellyfish Amakusa Jellyfish Mauve Stinger Purple Striped Jellyfish Japanese Sea Nettle Aurelia aurita Sanderia malayensis Pelagia noctilca Chrysaora colorata Chrysaora pacifica Pacific Sea Nettle Black Sea Nettle Lion’s Mane Jellyfish Blue Fire Jellyfish Egg Yolk Jellyfish Chrysaora fuscescens Chrysaora achlyos Cyanea capillata Cyanea lamarckii Phacellophora camtschatica Flame Jellyfish Blue Blubber Spotted Lagoon Jellyfish Australian Spotted Lagoon Jellyfish Upside Down Jellyfish Rhopilema esculentum Catostylus mosaicus Mastigias papu Phyllorhiza punctata Cassioppea sp. Mediterranean Jellyfish Crown Jellyfish Purple Jellyfish Chrystal Jellyfish Flower Hat Jellyfish Cotylorhiza tuberculata Cephea cephea Thysanostoma thysanura Aequorea victoria Olindias formosa Immortal Jellyfish Portuguese Man O’ War Box Jellyfish Comb Jellyfish Sea Gooseberry Turritopsis dohrni Physalia physali Chironex sp. Bolinopsis sp. Pleurobrachia bachei Cubic Aquarium Systems Exotic Aquaculture Jellyfish aquariums and specialised fish tanks | Cubic Aquarium Syste International Jellyfish Wholesale Cubic Aquarium Systems build a range of unique, specialised aquariums Exotic Aquaculture are a Hong Kong based aquarium livestock supplier for jellyfish and other unusual sea creatures specializing in jellyfish wholesale to the public and home aquarium trade. www.cubicaquarium.com Copyright Sanderia Group Limited www.exoticaquaculture.com All rights reserved.

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Ectosymbiotic Behavior of Cancer Gracilis and Its Trophic Relationships with Its Host Phacellophora Camtschatica and the Parasitoid Hyperia Medusarum
MARINE ECOLOGY PROGRESS SERIES Vol. 315: 221–236, 2006 Published June 13 Mar Ecol Prog Ser Ectosymbiotic behavior of Cancer gracilis and its trophic relationships with its host Phacellophora camtschatica and the parasitoid Hyperia medusarum Trisha Towanda*, Erik V. Thuesen Laboratory I, Evergreen State College, Olympia, Washington 98505, USA ABSTRACT: In southern Puget Sound, large numbers of megalopae and juveniles of the brachyuran crab Cancer gracilis and the hyperiid amphipod Hyperia medusarum were found riding the scypho- zoan Phacellophora camtschatica. C. gracilis megalopae numbered up to 326 individuals per medusa, instars reached 13 individuals per host and H. medusarum numbered up to 446 amphipods per host. Although C. gracilis megalopae and instars are not seen riding Aurelia labiata in the field, instars readily clung to A. labiata, as well as an artificial medusa, when confined in a planktonkreisel. In the laboratory, C. gracilis was observed to consume H. medusarum, P. camtschatica, Artemia franciscana and A. labiata. Crab fecal pellets contained mixed crustacean exoskeletons (70%), nematocysts (20%), and diatom frustules (8%). Nematocysts predominated in the fecal pellets of all stages and sexes of H. medusarum. In stable isotope studies, the δ13C and δ15N values for the megalopae (–19.9 and 11.4, respectively) fell closely in the range of those for H. medusarum (–19.6 and 12.5, respec- tively) and indicate a similar trophic reliance on the host. The broad range of δ13C (–25.2 to –19.6) and δ15N (10.9 to 17.5) values among crab instars reflects an increased diversity of diet as crabs develop. The association between C.
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Aequorea Victoria Class: Hydrozoa, Hydroidolina Order: Leptomedusae Family: Aequoreidae Crystal Jelly
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Control of Swimming in the Hydrozoan Jellyfish Aequorea Victoria: Subumbrellar Organization and Local Inhibition
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