CRUSTACEANS
A large and diverse taxon, crustaceans are primarily free-swimming aquatic animals, but do also include terrestrial families such as woodlice, as well as parasites and unusual cases like barnacles. They proportionally have some of the widest diversity of sizes amoung any arthropods, ranging from less than 1mm to 3.8m. Currently, around 45,000 species are known, but the actual total is quite probably far higher.
DECAPODA
ISOPODA
Hoffman's Isopod (Porcellio hoffmanseggi) (**English name is speculative**)
Hoffman's Isopod (Porcellio hoffmanseggi) (**English name is speculative**)
Common Prawn (Palaemon serratus)
MOLLUSCS
Molluscs are a large group of species that vary wildly in form, but generally consist of a soft body with a large number having a hard shell like component. It is a wildly divergent phylum with as varied species as snails, octopus and bivalve shells. There are an estimated 85000 known extant species.
Brown-lipped Snail (Cepaea nemoralis)
Common Limpet (Patella vulgata)
Molluscs are a large group of species that vary wildly in form, but generally consist of a soft body with a large number having a hard shell like component. It is a wildly divergent phylum with as varied species as snails, octopus and bivalve shells. There are an estimated 85000 known extant species.
Brown-lipped Snail (Cepaea nemoralis)
Common Limpet (Patella vulgata)
JELLYFISH & OTHER CNIDARIANS
Though there are only a very limited number of jellyfish species in British Coastal waters, this group contains over 10,000 species worldwide, and represent some of the largest of the invertebrates found in the oceans. Though collectively known to most people as Jellyfish, some species belong to somewhat different groups with comparatively alien against the more familiar species.
ACTINIARIA
Beadlet Anemone (Actinia equina)
RHIZOSTOMEAE
Barrel Jellyfish (Rhizostoma pulmo)
Though there are only a very limited number of jellyfish species in British Coastal waters, this group contains over 10,000 species worldwide, and represent some of the largest of the invertebrates found in the oceans. Though collectively known to most people as Jellyfish, some species belong to somewhat different groups with comparatively alien against the more familiar species.
ACTINIARIA
Beadlet Anemone (Actinia equina)
RHIZOSTOMEAE
Barrel Jellyfish (Rhizostoma pulmo)
ECHINODERMS
Echinoderms are an unusual group most famously consisting of the starfish and sea urchins, although it also contains other members such as the sea cucumbers, brittlestars and sand dollars. Unlike most larger animal species, they have radial symmetry rather than the bilateral symmetry of most animals. Largely aquatic, they are also one of the most successful groups of the deep seas where they are able to adapt where few species are able to.
Echinoderms are an unusual group most famously consisting of the starfish and sea urchins, although it also contains other members such as the sea cucumbers, brittlestars and sand dollars. Unlike most larger animal species, they have radial symmetry rather than the bilateral symmetry of most animals. Largely aquatic, they are also one of the most successful groups of the deep seas where they are able to adapt where few species are able to.
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