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Any one of many species of venomous aquatic snakes of the family Hydrophidæ, having a flattened tail and living entirely in the sea, especially in the warmer parts of the Indian and Pacific Oceans. They feed upon fishes, and are mostly of moderate size, but some species become eight or ten feet long and four inches bro…

Any aquatic carnivorous mammal of the families Phocidæ and Otariidæ.

Any aquatic animal whose external covering consists of a shell, either testaceous, as in oysters, clams, and other mollusks, or crustaceous, as in lobsters and crabs.

An order of large aquatic herbivorous mammals, including the manatee, dugong, rytina, and several fossil genera.

Any one of four species of aquatic birds of the genus Anhinga or Plotus. They are allied to the gannets and cormorants, but have very long, slender, flexible necks, and sharp bills.

oöl.) See Snap beetle, under Snap. -- Snapping turtle. (Zoöl.) (a) A large and voracious aquatic turtle (Chelydra serpentina) common in the fresh waters of the United States; -- so called from its habit of seizing its prey by a snap of its jaws. Called also mud turtle. (b) See Alligator snapper, under Alligator.…

The ova, or eggs, of fishes, oysters, and other aquatic animals.

s Stellaria, having star-shaped flowers; star flower; chickweed. Gray. Water starwort, an aquatic plant (Callitriche verna) having some resemblance to chickweed. -- Yellow starwort, a plant of the genus Inula; elecampane.

Being or growing under water, as the leaves of aquatic plants.

Any one of numerous species of large aquatic birds belonging to Cygnus, Olor, and allied genera of the subfamily Cygninæ. They have a large and strong beak and a long neck, and are noted for their graceful movements when swimming. Most of the northern species are white. In literature the swan was fabled to sing a melod…

The young aquatic larva of any amphibian. In this stage it breathes by means of external or internal gills, is at first destitute of legs, and has a finlike tail. Called also polliwig, polliwog, porwiggle, or purwiggy.

An order of minute aquatic arachnids; -- called also bear animalcules, sloth animalcules, and water bears.

Any one of numerous species of long-winged aquatic birds, allied to the gulls, and belonging to Sterna and various allied genera.

One of the gill-like breathing organs of certain aquatic insect larvæ. They contain tracheal tubes somewhat similar to those of other insects.

An order of tailed aquatic amphibians, including Siren and Pseudobranchus. They have anterior legs only, are eel-like in form, and have no teeth except a small patch on the palate. The external gills are persistent through life.

Any one of numerous species of aquatic salamanders. The common European species are Hemisalamandra cristata, Molge palmata, and M. alpestris, a red-bellied species common in Switzerland. The most common species the United States is Diemyctylus viridescens. See Illust. under Salamander.

are so called from their habit of turning up small stones in search of mollusks and other aquatic animals. Called also brant bird, sand runner, sea quail, sea lark, sparkback, and skirlcrake. Black turnstone, the California turnstone (Arenaria melanocephala). The adult in summer is mostly black, except some white strea…

A European aquatic toad (Bombinator igneus). Its back is dark; its belly is marked with crimson. Called also feuerkröte.

A genus of aquatic flowering plants, in which the submersed leaves bear many little utricles, or ascidia. See Ascidium,

A genus of aquatic plants named in honor of Queen Victoria. The Victoria regia is a native of Guiana and Brazil. Its large, spreading leaves are often over five feet in diameter, and have a rim from three to five inches high; its immense rose-white flowers sometimes attain a diameter of nearly two feet.…