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According to the NOAA, these fish have been alive for 455 million years and are apex predators.

25 sep, 2020

If you're outside during a storm and near water, get away quickly. Second, avoid water indoors during a storm.

 these fish have been alive for 455 million years and are apex predators.

Light can travel through electrical outlets' wires or bars.

Sharks are made of cartilaginous tissues, like rays and skates.

Sharks are boneless. NOAA says sharks are "elasmobranchs," or cartilaginous animals. Cartilage makes up ears and nose tips.

What about shark anatomy? 

Elasmobranchs include rays, sawfish, and skates. According to Discovery UK, cartilage is half as dense as bone

Different terrains require different sheltering strategies.

NOAA says dried shark jaws look like bone but aren't. Calcium salts harden shark cartilage as they age.

Is shark jaw bone?

According to Indiana's Dental Center, shark teeth have dentin.Soft tissue-like substance inside teeth.

Bone or cartilage?

Sharks have tooth enamel like humans. NOAA believes fossils indicate shark tooth enamel.

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