Bottom-dwelling sharks video


This video says about itself:

Bottom-Dwelling Sharks (HD) | JONATHAN BIRD’S BLUE WORLD

15 July 2016

When most people think of a shark, they think of an animal like the Great White or a reef shark. But there are hundreds of small, bottom-dwelling sharks like the Wobbegong that blend in to the bottom to hunt as ambush predators, the Indonesian Walking shark that walks on its fins, or sharks like Nurse sharks that simply spend most of their time resting on the bottom. Jonathan travels from Australia to Indonesia looking at interesting sharks that don’t look like sharks!

Jonathan Bird’s Blue World is an Emmy Award-winning underwater science/adventure program that airs on public television in the United States.

Finding Dory movie, fiction and science


This video from the USA says about itself:

8 July 2016

While Disney/Pixar has produced a wonderful story with “Finding Dory” they have made some rather large mistakes in marine biology and Jonathan is here to discuss his top 3.

1. Destiny is a whale shark, not a whale. How can a whale shark speak whale? Can a Tiger shark speak Tiger?

2. A Beluga‘s echolocation doesn’t work in air and certainly can’t see what is inside a truck on the other side of a mountain.

3. Marine fish (i.e. salt water fish) cannot live in fresh water!

Common roach fish in Ireland, video


This video from Ireland says about itself:

8 July 2016

Common roach fish in freshwater

Common roach are small fish with an average size of 35cm, but some of them grow a bit more with a length of between 45-50cm. The common roach has red fins and a bluish silvery body with a white belly. The common roach has a big red spot in the iris and above and beside the pupil. The common roach lives in freshwater but also brackish water.

The common roach eats plant material and benthic invertebrates and also plankton. The common roach are native to most of Europe and western Asia. The common roach inhabit rivers, ponds and lakes and man-made canals. The common roach belong to the Cyprinidae family.

Tiger shark video


This video says about itself:

1 July 2016

Back in 2008 when we last worked with Tiger sharks, things were different. We were thrilled just to be in the water with Tiger sharks and no cage. But in the past few years, interactions with Tiger sharks have become much more engaging. Now the sharks are being hand fed and handled by divers. In this exciting segment, Jonathan learns how to flip a Tiger shark from experienced shark handlers Connor Cassidy and Rich D’Argento aboard the Dolphin Dream.

Jonathan Bird’s Blue World is an Emmy Award-winning underwater science/adventure program that airs on public television in the United States.

Sharks and their teeth


This video says about itself:

13 March 2015

In this informative Shark Academy episode, Jonathan Bird explores the different kinds of teeth that sharks have and what they are used for.

From eNatureBlog in the USA:

How Many Teeth Are In A Shark‘s Mouth?

Posted on Tuesday, June 28, 2016 by eNature

Sharks have been in the news the past week, with a number of attacks on bathers in the waters worldwide. And the Discovery Channel’s annual Shark Week was this week as well.

Whenever sharks are in the news, we tend to get lots of questions about them, especially their teeth.. It seems folks are fascinated by shark’s teeth—something for which there is no shortage in a shark’s mouth!

A Never-ending Supply

Wouldn’t it be nice if our teeth replaced themselves whenever we needed a fresh set? No more drills. No more crowns. No more denture adhesives. That’s what happens to sharks.

In fact, some sharks replace their teeth every few weeks.

So the answer to the question how how many teeth does a shark have is pretty easy… as many as they need!

A Mouthful Of Teeth!

While the number of teeth in a shark’s mouth generally ranges about 20-30, depending on the species, many shark species continue to generate teeth throughout their lives. So the[y] never run out…

The teeth inside a shark’s mouth are arranged in rows, like seats in a theater. While the outermost teeth do the work of grabbing, cutting, or crushing prey—their function varies from species to species—the inner rows of teeth mature. Then, when the shark sheds the worn outer teeth, the next row takes their place.

It’s a process that continues throughout the shark’s life, with teeth being replaced more frequently the more actively the shark feeds.

Ever encounter a shark’s teeth up close? If so, you’re in a very small minority. Despite all the attention they have received in the news the past few weeks, shark attacks on humans are actually quite rare. They’re generally no more eager to meet us than we are to meet them

Even so, it never pays to tempt fate! So pay attention to warnings when you’re swimming in areas know to be frequented by sharks.

Got a shark story to share? Tell us in the comment section below.

Click here to learn more about sharks found around North America.

European eel life cycle video


This video from the Zoological Society of London in England says about itself:

The Amazing Life Cycle of the European Eel

1 July 2015

Find out about the incredible life cycle of the Critically Endangered European eel and their amazing migration.

ZSL has been working to conserve these iconic London inhabitants as part of our Tidal Thames Conservation Project for the past 10 years. Find out more about that work here.