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Their digestive system is specialized, too, as detritivores, the animals feed on organic matter that falls to the bottom of the sea, gathering and ingesting this detritus with the tube feet. Their gut is very efficient, allowing the maximum amount of nutrition to be extracted from meager resources around the animal's immediate environment.
Scotoplanes globosa, commonly known as the sea pig, is a species of sea cucumber that lives in the deep sea. [1] It was first described by Hjalmar Théel , a Swedish scientist. Scotoplanes globosa , along with numerous other sea cucumbers were discovered by Théel during an expedition on HMS Challenger between the years of 1873-1876.
The sea mouse is an active predator [2] feeding primarily on small crabs, hermit crabs and other polychaete worms including Pectinaria and Lumbriconereis. [2] It has been observed consuming other polychaete worms over three times its own body length. [2] Feeding activity takes place at night, with the animal partially buried in sand. [2]
The defense mechanisms animals use to evade or fight off predators can be both bizarre and fascinating. Some use camouflage or mimicry, while others have protective armor. Sea cucumbers, however ...
The pink amperima sea cucumber, nicknamed the “Barbie pig,” is one of the largest invertebrates living on the deep-sea floor. Along with the transparent unicumber, the creature is a type of ...
The horns of female bovids are thought to have evolved for defense against predators or to express territoriality, as nonterritorial females, which are able to use crypsis for predator defense, often lack horns. [60] Rhinoceros horns, unlike those of other horned mammals, consist only of keratin.
Grey seals are vulnerable to typical predators for a pinniped mammal; their primary predator would be the orca or killer whale, but certain large species of sharks are known to prey on grey seals in North American waters, particularly great white sharks and bull sharks but also, upon evidence, additionally Greenland sharks. Some grey seal ...
Males are typically smaller than females, and in some species, such as Emerita rathbunae, the minute males live attached to the legs of the female. [7] Females are around 8–37 mm (0.31–1.46 in) in carapace length, depending on the species, while males vary from a similar size to females in E. austroafricana , down to 2.5 mm (0.098 in ...