Don’t Ever Buy Shark Fin Soup- They are killing 100 million sharks a year in Asia just for this stupid status soup. And they cut off the fins and throw the shark back alive in the water to drown. This is cruel and also we need sharks to keep the ocean’s ecosystem healthy. They are apex predators which means they are at the top of the food chain and keep other populations like seals healthy and in check. They are also the garage men of the sea eating all the rotten stuff. Protect our sharks!
Update: Awesome news! An article just came out showing how in 2006, 75% of Chinese didn’t know that sharks were killed to make shark fin soup. But now, 91% of Chinese support a nationwide ban, thanks to activism work by Yao Ming the famous NBA basketball player and others. We still have a long way to go but this is truly great news for our sharks! (source: howtoconserve.org)
Healthy Sharks, Healthy Ocean
Neat shark fact: Sharks get all blissed out when their noses are stroked.
Their noses are very sensitive because of the clusters of tiny electrically sensitive receptor cells called Ampullae of Lorenzini. Here’s an awesome video of a scuba diver petting a blissful shark:
This is so sweet, the source video shows how the shark actually enjoyed this. It experienced it once and then kept coming back for more petting.
Also, the shark was able to breathe while still, not all sharks need to be in motion to pass water through their gills. If you look you can see the gills pumping.
Here’s another video of a shark getting all blissed out with pleasure because somebody is stroking its nose:
More trippy facts
A shark’s nose is very sensitive because of the clusters of tiny electrically sensitive receptor cells called Ampullae of Lorenzini that are positioned under the skin of shark’s nose and head. These cells are connected to pores on the skin’s surface via tiny tubes filled with electrically conductive jelly. Ampullae of Lorenzini give the shark “electroreception”, allowing it to detect any changes in the electrical currents around the fish. Scientists still don’t yet understand everything about these ampullary organs, but they do know the sensors let sharks “see” the weak electrical fields generated by living organisms. The range of electrosense seems to be fairly limited — a few feet in front of the shark’s nose — but this is enough to seek out fish and other prey hiding on the ocean floor.
The shark’s nose is definitely one of its most impressive (and prominent) features. As the shark moves, water flows through two forward facing nostrils, positioned along the sides of the snout. The water enters the nasal passage and moves past folds of skin covered with sensory cells. In some sharks, these sensitive cells can detect even the slightest traces of blood in the water. A great white shark, for example, would be able to detect a single drop of blood in an Olympic-size pool. Most sharks can detect blood and animal odors from many miles away.
Another amazing thing about a shark’s sense of smell is that it’s directional. The twin nasal cavities act something like your two ears: Smell coming from the left of the shark will arrive at the left cavity just before it arrives at the right cavity. In this way, a shark can figure out where a smell is coming from and head in that direction.
Sharks also have a very acute sense of hearing. Research suggests they can hear low pitch sounds well below the range of human hearing. Sharks may track sounds over many miles, listening specifically for distress sounds from wounded prey.
Shark in an underwater forest
They lived from 23 to 2.6 million years ago
Smiling Great Whites
This 6 meter long (20 ft) great white shark is the biggest one ever recorded