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A species of bug that have aquatic habits.

Water Bug

A species of bug that have aquatic habits.

A life buoy, is a life saving buoy designed to be thrown to a person in the water, to provide buoyancy, to prevent drowning.

Life Buoy

A life buoy, is a life saving buoy designed to be thrown to a person in the water, to provide buoyancy,…

Chaetognatha is a phylum of predatory marine worms that are a major component of plankton worldwide. About 20% of the known species are benthic and can attach to algae or rocks. They are found in all marine waters from surface tropical waters and shallow tide pools to the deep sea and polar regions. Most chaetognaths are transparent and are torpedo shaped. Some deep-sea species are orange. They range in size from 2 mm to 12 cm. The common term for the phylum is Arrow Worms. There are more than 120 modern species assigned to over 20 genera. Despite the limited diversity of species, the number of individuals is staggering.

Chaetognatha

Chaetognatha is a phylum of predatory marine worms that are a major component of plankton worldwide.…

"Three principal parts, the card, the needle on its lower suface, and the case. The whole is enclosed in the compass-box, or binnacle. the term compass is said to have been applied to the instrument because the card involves or compasses the whole plane of the horizon, or because the needle indicates the whole circle of possible variations of direction. The surface of the card is divided by radiating lines into 32 parts, each containing 11 degrees." — Encyclopedia Britannica, 1893

Compass Card

"Three principal parts, the card, the needle on its lower suface, and the case. The whole is enclosed…

The skeleton of a dugong, one of four living species in the order Sirenia.

Skeleton of the Dugong

The skeleton of a dugong, one of four living species in the order Sirenia.

Diagram illustrating change in facies of marine clastics, from sands and muds near the shore to calcareous beds near coral reefs, etc. Note also the overlap of the successive formations.

Change in Facies

Diagram illustrating change in facies of marine clastics, from sands and muds near the shore to calcareous…

A common fish known for its flat appearance and both eyes being on the upper, darker side of its body.

Flounder

A common fish known for its flat appearance and both eyes being on the upper, darker side of its body.

An illustration of the Marine Hospital located a the Brooklyn Navy-Yard.

Hospital

An illustration of the Marine Hospital located a the Brooklyn Navy-Yard.

The United States Marine Hospital is a historic Greek Revival hospital building in Mobile, Alabama. Construction began in 1838 and was completed in 1842. IT was designed by architect Frederick Bunnell and was operated by the Marine Hospital Service from opening until it closed, in 1952. It treated Confederate and Union soldiers during the American Civil War.

Marine Hospital

The United States Marine Hospital is a historic Greek Revival hospital building in Mobile, Alabama.…

Marginella is a genus of small sea snails, marine gastropod molluscs in the family Marginellidae, the margin snails. The shells of the species in this genus have spires which range from moderately elevated to flattened. The surface of the shell is glossy and porcellaneous, and it is often but not always colorful.

Marginella

Marginella is a genus of small sea snails, marine gastropod molluscs in the family Marginellidae, the…

"In the newt a tail is superadded to the extremities, the tail and the extremities both acting in swimming."—Pettigrew, 1874

Crested Newt

"In the newt a tail is superadded to the extremities, the tail and the extremities both acting in swimming."—Pettigrew,…

Restored section from the Appalachians to the Cincinnati region, to show the overlaps of continental and marine strata.

Overlap from the Appalachians to Cincinnati

Restored section from the Appalachians to the Cincinnati region, to show the overlaps of continental…

<i>Sipunculus nudus</i>. A species of unsegmented marine worm, commonly called the peanut worm. "B, Larval Sipunculus, about one twelfth of an inch long. o, mouth; oe, esophagus; s, caecal gland; i1, intestine with masses of fatty cells; a, anus; w, ciliated groove of intestine; g, brain with two pairs of red eye-spots; n, nervous cord; p, pore; t, t1, so-called testes; W, W, circlet of cilia." &mdash;Whitney, 1889

Peanut Worm - Interior Anatomy of Larva

Sipunculus nudus. A species of unsegmented marine worm, commonly called the peanut worm. "B, Larval…

A small cetacean that is related to whales and dolphins.

The Porpoise

A small cetacean that is related to whales and dolphins.

Sections to illustrate progressive overlap; a) in a continental series, away from the source of supply; b) in a marine series towards the source of supply.

Progressive Overlap

Sections to illustrate progressive overlap; a) in a continental series, away from the source of supply;…

This painting by Claude Gelle Le Lorrain is one of his favorites. It is practically identical to his No. 22 etching.

The Rape of Europa

This painting by Claude Gelle Le Lorrain is one of his favorites. It is practically identical to his…

"The seal, adapted principally for water. The extremities are larger than in the porpoise and manatee."&mdash;Pettigrew, 1874

The Seal

"The seal, adapted principally for water. The extremities are larger than in the porpoise and manatee."—Pettigrew,…

"The marine trumpet or Triton's shell, <em>Triton variegatus</em>, is elegantly variegated with red and bay, the edge of the outer lip spotted with black. It is a native of the Asiatic West Indian seas." &mdash; Goodrich, 1859

Marine trumpet-shell

"The marine trumpet or Triton's shell, Triton variegatus, is elegantly variegated with red…