Jellyfish species are classified in the subphylum Medusozoa which makes up a major part of the phylum Cnidaria, although not all Medusozoa species are considered to be jellyfish.
Jellyfish are found in every ocean, from the surface to the deep sea.
Jellyfish employ a loose network of nerves, located in the epidermis, which is called a "nerve net".
A jellyfish detects various stimuli including the touch of other animals via this nerve net, which then transmits impulses both throughout the nerve net and around a circular nerve ring, through the rhopalial lappet, located at the rim of the jellyfish body, to other nerve cells.
The upper or aboral surface is called the exumbrella and the lower surface is called the subumbrella; the mouth is located on the lower surface, which may be partially closed by a membrane extending inward from the margin (called the velum).
The digestive cavity consists of the gastrovascular cavity and radiating canals which extend toward the margin; these canals may be simple or branching, and vary in number from few to many.
Jellyfish are "bloomy" by nature of their life cycles, being produced by their benthic polyps usually in the spring when sunshine and plankton increase, so they appear rather suddenly and often in large numbers, even when an ecosystem is in balance.
We host the largest national reggata in the UK and we are home to the world’s tallest town crier.Jellyfish have roamed the seas for at least 500 million years, It has traditionally also been applied to other animals sharing a superficial resemblance, for example ctenophores (members from another phylum of common, gelatinous and generally transparent or translucent, free-swimming planktonic carnivores now known as comb jellies) were included as "jellyfishes".though neither term is commonly used by scientists who study jellyfish.They were hoping for the 12th and while you might see some activity starting tomorrow, those’ll be some friends and family events – but the good news is – Compass Rose opens to the public on Wednesday: “will officially open our doors to the public on Wed, the 16th!! After a 7 month liquor license battle, a government shut down, something like 10 snow days and 2 polar vortexes-we are ready to roll.” If you missed the sneak peek – you can have a look inside here.The jewel in Shropshire’s crown, Shrewsbury is packed with fascinating history.Further afield and well worth a visit is the Ironbridge Gorge World Heritage Site; Hawkstone Historic Park and Follies - a wonderland of caves, cliffs, crags and woodland; Wroxeter Roman City (the remains of Britain's fourth largest Roman settlement), and the Severn Valley Steam Railway.For those who enjoy getting outdoors, the gorgeous rolling countryside and hills of Shropshire stretch as far as the eye can see in every direction, making Shrewsbury the ideal base for a walking holiday.This opens into the gastrovascular cavity, where digestion takes place and nutrients are absorbed.It is joined to the radial canals which extend to the margin of the bell, where tentacles are attached.The bell can pulsate to acquire propulsion and locomotion.The tentacles may be utilized to capture prey or defend against predators by emitting toxins in a painful sting.