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Arthropods like these northern prawn, and some mammals, detect water movement with sensory hairs such as whiskers, bristles or antennae. In animal physiology, hydrodynamic reception refers to the ability of some animals to sense water movements generated by biotic (conspecifics, predators, or prey) or abiotic sources.
The ferns of this order vary radically in form and do not look particularly fern-like. Species of the family Salviniaceae are natant (floating), while those of the family Marsileaceae are rooted. However, the natant species may temporarily grow on wet mud during times of low water, and the Marsileaceae may grow as emergent species, depending on ...
Genomic studies across different tardigrade groups help reconstruct the evolution of their genome, such as the relationship of tardigrade body segments to those of other Panarthropoda. A 2023 review concludes that despite the diversity of body plan among the Panarthropoda, the tardigrade body plan maps best with "a simple one-to-one alignment ...
The comb jellies have more than 80 different cell types, exceeding the numbers from other groups like placozoans, sponges, cnidarians, and some deep-branching bilaterians. [ 23 ] Ranging from about 1 millimeter (0.04 in) to 1.5 meters (5 ft) in size, [ 22 ] [ 24 ] ctenophores are the largest non-colonial animals that use cilia as their main ...
Capybara groups can consist of as many as 50 or 100 individuals during the dry season [29] [34] when the animals gather around available water sources. Males establish social bonds, dominance, or general group consensus. [34] They can make dog-like barks [29] when threatened or when females are herding young. [35]
In order to grow back the smelt’s numbers, the state has limited the amount of water from the delta that’s diverted for human usage and instead has allowed more water to flow from the basin to ...
Pacific sea nettles, Chrysaora fuscescens. Cnidaria (/ n ɪ ˈ d ɛər i ə, n aɪ-/ nih-DAIR-ee-ə, NY-) [4] is a phylum under kingdom Animalia containing over 11,000 species [5] of aquatic invertebrates found both in fresh water and marine environments (predominantly the latter), including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites.
Members of the family generally have large, leaf-like pectoral fins and lack scales, although some species are covered with soft spines. This is important to the species as the depths in which they live are highly pressurized and they are ambush/opportunistic/foraging predators that do not expend energy unless they are forced to.