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An anchialine system (/ ˈ æ ŋ k i ə l aɪ n /, from Greek ankhialos 'near the sea') is a landlocked body of water with a subterranean connection to the ocean.Depending on its formation, these systems can exist in one of two primary forms: pools or caves.
The smaller Dos Ojos became a part of Sac Actun, making the Sistema Sac Actun the longest known underwater cave system in the world. [2] Dos Ojos lies north of the rest of the Sac Actun cave system. As a separate system, Dos Ojos remained in the top ten, if not the top three, longest underwater cave systems in the world since the late 1980s. [3]
Speleophriidae is a family of copepods, comprising seven genera. [1] All are restricted to anchialine caves, with the exception of Archimisophria, which is found in the hyperbenthos of the depths of the Atlantic Ocean. [2]
Caves or caverns are natural voids under the Earth's surface. [1] Caves often form by the weathering of rock and often extend deep underground. Exogene caves are smaller openings that extend a relatively short distance underground (such as rock shelters). Caves which extend further underground than the opening is wide are called endogene caves ...
They are free-swimming crustaceans, typically living in low-oxygen, brackish waters of near-marine caves, and their distribution is linked to the ancient Tethys Sea. The feeding technique of X. tulumensis is unique among crustaceans, and its venom is a useful adaptation that to some extent compensates for being sightless in a nutrient-poor or ...
Ingolfiella longipes is a species of amphipod crustacean in the family Ingolfiellidae notable for its orange striped coloration. It is known from a single specimen held at the Naturalis Biodiversity Center.
It is endemic to groundwater and anchialine systems in caves in the Cape Range, Australia. Like other cave-adapted fish, the blind gudgeon is entirely blind and lacks pigmentation, using sensory papillae on its head and body to move around and find food. [4] It has a reduced number of scales on its body and the head is almost scaleless. [5]
Mictacea is a monotypic order of crustaceans.It was originally erected for three species of small shrimp-like animals of the deep sea and anchialine caves. [2] They were placed in two families, the Mictocarididae and Hirsutiidae, [1] [2] but Hirsutiidae is now placed in order Bochusacea, [3] leaving Mictacea with a single species, Mictocaris halope.