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Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.
Toggle Marine animals subsection. 2.1 Fish. 2.2 Invertebrates. 3 Freshwater animals. 4 Fungi. 5 Bacteria. 6 Other microorganisms. 7 References. Toggle the table of ...
This animal's ventral fins are specialized forked barbel-like organs that act as sensory organs. Cusk eels produce sounds to mate. Male cusk eels have two pairs of sonic muscles, while female cusk eels have three. [8] Abyssal grenadier: this resident of the abyssal zone is known to live at depths ranging from 800 and 4,000 meters. It has ...
Troglofauna are small cave-dwelling animals that have adapted to their dark surroundings. Troglofauna and stygofauna are the two types of subterranean fauna (based on life-history). Both are associated with subterranean environments – troglofauna are associated with caves and spaces above the water table and stygofauna with water.
Scientists have discovered that wombats, platypi and other Australian mammals glow in the dark under ultraviolet light, the Australian Broadcasting Corporation reported. Researchers in Wisconsin ...
If you or someone you know has been bitten or scratched by an animal unknown to you, or if you have made contact with the skin, saliva, or other potentially infectious material of wild animals ...
Deep-sea fish are fish that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep-sea fishes include the flashlight fish , cookiecutter shark , bristlemouths , anglerfish , viperfish , and some species of eelpout .
Some crepuscular animals may also be active by moonlight or during an overcast day. Matutinal animals are active only after dawn, and vespertine only before dusk. A number of factors affect the time of day an animal is active. Predators hunt when their prey is available, and prey try to avoid the times when their principal predators are at large.