hydroid

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hydroid

a member of the COELENTERATE class Hydrozoa. Most are colonial forms which grow in the marine environment on rocks and seaweeds, such as Obelia. Usually, there is an ALTERNATION OF GENERATIONS (not in HYDRA) in which the MEDUSA (free-swimming) stage carries the sex organs. The sedentary, nonsexual stage of this life cycle is itself referred to as the POLYP or (less commonly) hydroid stage.
References in periodicals archive ?
Knowledge on intertidal hydroids is complemented by checklists including species occurring from 0[degrees] to 54[degrees]S (Migotto et al.
Cuthona phoenix has usually been found among hydroids growing on flotsam, floats, or giant kelp, Macrocystis.
Pycnogonids from both groups were placed individually in chambers with approximately 2 g of hydroids as a food source.
Juvenile red king crab and blue king crab (Paralithodes platypus) prefer highly structured habitats, which consist of pebbles, cobble, hydroids, macroalgae, shell material, etc.
Schuchert P (2006) The European athecate hydroids and their medusae (Hydrozoa: Cnidaria) Capitata Part 1.
Anthoathecatae and Leptothecatae hydroids from Costa Rica (Cnidaria: Hydrozoa).
Many are covered with tough, stringy hydroids and icky little shrimpy things that my running buddy, WHOI biologist Stace Beaulieu, later tells me are amphipods when I quiz her with pictures.
Among the fossils are a variety of creatures from sponges, worms and nautiloids to solitary hydroids, also known as the flowers of the sea.
Additionally, these "long sleeve" sting suit tops will totally protect you from fire coral and stinging hydroids that are prevalent on ledges and wrecks throughout the Florida Keys.
Home to the pretty cuckoo wrasse, the fearsome-looking wolf fish, deeplet sea anemones, light bulb sea squirts, edible sea urchins and bottle brush hydroids.
Rich communities of bottle brush hydroids, anemones, algae and corals-covering chalk reefs.
Bertsch and the late Kerstich combined their academic backgrounds and considerable talents in photography to provide an atlas of the sponges, hydroids, anemones, corals, gorgonians, worms (flat, ribbon, segmented peanut and spoon), clams, snails, nudibranchs, octopuses, barnacles, shrimps, lobsters, crabs, sea starts, brittle starts, sea cucumbers and sea urchins from this rich but endangered warm water haven in Mexico.