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Red handfish use their hand-like fins to "walk" across the seafloor instead of swimming.

The Chinese paddlefish was one of the largest freshwater fish before it was declared extinct. 

Sakhalin sturgeon are critically endangered and are among the rarest sturgeon species in the world. 

Longnose chimaeras are deep-sea relatives of sharks and rays with long, pointed snouts. 

A durable igneous rock formed from slowly cooled magma beneath the Earth's surface.

A sedimentray rock made from primarily from the remains of ancient marine organisms. 

A gritty sedimentary rock formed from layers of compressed sand.

A fine-grained metamorphic rock that naturally splits into thin, flat sheets.

A dark volcanic rock created when lava cools quickly at the Earth's surface.

A beautiful metamorphic rock prized for its smooth texture and elegant patterns.

A soft sedimentary rock formed from compacted layers of mud and clay.

A naturally occuring volcanic glass with razor-sharp edges and a glossy finish.

A color variety of quartz admired for its rich patterns and earthy tones. 

A common material found in linestone and famous for its wide variety of colors.

A colorful crystal that often glows under ultraviolet light.

A shimmering gemstone known for its flashes of blue, green, and gold.

A luminous gemstone with a soft glow that seems to float beneath its surface. 

A blue-green gemstone admired for its calming ocean-like colors.

A golden-brown gemstone with silky bands that resmeble the eye of a tiger.

A sparkling variety of quartz whose tiny mineral inclusions catch the light.