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"The Paper-nautilus, or Argonaut, [floats] gracefully on the surface of the sea, trimming its tiny sail to the breeze, just sufficient to ruffle the surface of the waves, it looks like an exquisite living shallop."

Argonauto Argo (Linnaeus)

"The Paper-nautilus, or Argonaut, [floats] gracefully on the surface of the sea, trimming its tiny sail…

"The argonaut can blush, turn pale, and show through its transparent shell its body changing in sudden shades."

Argonauta Papyracea in its Shell

"The argonaut can blush, turn pale, and show through its transparent shell its body changing in sudden…

"The principal apparatus of progression of the animal is the funnel with which it is furnished, in common with all Cephalopods, and which is very long in the argonaut. Aided by this apparatus, it ejects water after it has served the purpose of respiration, and in doing so, projects itself through the water."

Argonauta Papyracea Swimming

"The principal apparatus of progression of the animal is the funnel with which it is furnished, in common…

"In one genera [of the <em>Octopodidae</em> family] the arms are completely united in their whole extent by a thin membrane."

Cirrhoteuthis Mulleri (Eschricht)

"In one genera [of the Octopodidae family] the arms are completely united in their whole extent…

"The Common Calmar or Squid. They propel themselves backward through the water with great velocity, driving back the water by means of their funnel."

Loligo Gahi (d'Orbigny)

"The Common Calmar or Squid. They propel themselves backward through the water with great velocity,…

"The Common Calmar or Squid. They propel themselves backward through the water with great velocity, driving back the water by means of their funnel."

Loligo Vulgaris, with its pen, or internal bone (Lamarck)

"The Common Calmar or Squid. They propel themselves backward through the water with great velocity,…

"A very ugly-looking creature, which belongs to the <em>Octopodidae</em> family, is the Octopus."

Octopus Brevipes (d'Orbigny)

"A very ugly-looking creature, which belongs to the Octopodidae family, is the Octopus."

"A very ugly-looking creature, which belongs to the <em>Octopodidae</em> family, is the Octopus."

Octopus Horridus (d'Orbigny)

"A very ugly-looking creature, which belongs to the Octopodidae family, is the Octopus."

"A very ugly-looking creature, which belongs to the <em>Octopodidae</em> family, is the Octopus."

Octopus Macropus (Risso)

"A very ugly-looking creature, which belongs to the Octopodidae family, is the Octopus."

"A very ugly-looking creature, which belongs to the <em>Octopodidae</em> family, is the Octopus."

Octopus Vulgaris (Lamarck)

"A very ugly-looking creature, which belongs to the Octopodidae family, is the Octopus."

This creature, belonging to the <em>Octopodidae</em> family, "changes its color under any exertion, so that the animal at rest and in motion are two different beings."

Pinnoctopus Cordiiformis (Q. & G.)

This creature, belonging to the Octopodidae family, "changes its color under any exertion,…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts a sea monster.

Sea Monster

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts a Sea Monster.

Sea Monster

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts a sea monster.

Sea Monster

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures consisting of triangles, squares, and parallelograms are used to construct the given shape. This tangram depicts a sea monster.

Sea Monster

Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. Seven figures…

Kraken are legendary sea monsters of gargantuan size, said to have dwelt off the coasts of Norway and Iceland. Kraken is the definite article form of krake, a Scandinavian word designating an unhealthy animal, or something twisted. Pen and wash drawing by malacologist Pierre D&eacute;nys de Montfort, 1801, from the descriptions of French sailors reportedly attacked by such a creature off the coast of Angola.

Kraken Sea Monster

Kraken are legendary sea monsters of gargantuan size, said to have dwelt off the coasts of Norway and…

"Cuttlefish are probably the most interesting animals of [the cephalopoda] order. They live for five or six years, and lay eggs, which are large and generally found in clusters, and are known to fishermen as sea-grapes."

Sepia Officinalis (Linnaeus)

"Cuttlefish are probably the most interesting animals of [the cephalopoda] order. They live for five…

An upclose view of the arm of a Sepia Tuberculosa.

Arm of Sepia Tuberculosa (Lamarck)

An upclose view of the arm of a Sepia Tuberculosa.

Outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram pieces. Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. 7 figures consisting of triangles, squares, and parallelograms are used to construct the given shapes.

Sea Animals Outline Tangram Card

Outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram pieces. Tangrams,…

Solutions for outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram pieces. Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. 7 figures consisting of triangles, squares, and parallelograms are used to construct the given shapes.

Sea Animals Outline Solution Tangram Card

Solutions for outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram…

Silhouette outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram pieces. Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. 7 figures consisting of triangles, squares, and parallelograms are used to construct the given shapes.

Sea Animals Silhouette Tangram Card

Silhouette outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram pieces.…

Solutions for silhouette outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from tangram pieces. Tangrams, invented by the Chinese, are used to develop geometric thinking and spatial sense. 7 figures consisting of triangles, squares, and parallelograms are used to construct the given shapes.

Sea Animals Silhouette Solution Tangram Card

Solutions for silhouette outlines of sea animals (sea monster, dolphin, sea turtle, stingray) made from…