Seafood

Sharks have two nostrils (called nares) below their snout that are used for smelling, but they don’t join up to the back of the throat… Read More »How Is A Shark’S Nose Different From Our Own?

nares. A shark’s nostrils, called nares, are powerful tools for sniffing out prey or their mate. Their nares contain the olfactory epithelium, sensitive cells that… Read More »What Is The Nose Of A Shark Called?

A blacktip reef shark that at one stage had to be removed from public view at a Russian zoo after suffering a ‘nervous breakdown’, has… Read More »Can Sharks Get Heart Attacks?

Unlike many animals, sharks lack the ability to make any vocalizations. This is because they lack a sound-producing organ: the larynx. Do sharks communicate by… Read More »Do Sharks Have A Larynx?

However, sharks have absolutely nothing whatsoever to do with the global oxygen supply. There is absolutely no evidence in favor of this claim, and lots… Read More »Do Sharks Give Us Oxygen?

Gills allow fish to take in oxygen from the surrounding water and eliminate carbon dioxide from the blood. Sharks can have up to seven external… Read More »What Type Of Respiratory System Do Sharks Have?

Sharks possess a single-circuit circulatory system centered around a two-chambered heart. Blood flows from the heart to the gills where it is oxygenated. This oxygen-rich… Read More »Do Sharks Have Double Circulation?

In elasmobranchs (sharks and rays), the job of manufacturing red blood cells is performed by the spleen, special tissue around the gonads (reproductive organs), and… Read More »How Do Sharks Produce Blood Cells?

As water passes over the gills, small capillaries allow oxygen to enter the bloodstream. The oxygenated blood is then pumped throughout the shark’s body. Where… Read More »Do Sharks Have Oxygenated Blood?

Sharks possess a single-circuit circulatory system centered around a two-chambered heart. Blood flows from the heart to the gills where it is oxygenated. This oxygen-rich… Read More »What Type Of Circulation Do Sharks Have?