Archive for the 'Skates and Rays' Category
Well…no, but they do have skeletons. Confused? Many people are. Some folks are so confused that they think sharks’ boneless nature makes them invertebrates.
Sharks do have skeletons, just like you, but they’re made of cartilage rather than bone. Cartilage is the flexible stuff in the tip of your nose. A cartilage skeleton has its advantages. [...]
Sorta. Stingrays and sharks are very closely related. They belong to a group of fishes called the elasmobranchs. All elasmobranchs have skeletons made of cartilage (the flexible stuff in the tip of your nose) and 5-7 gill slits. The group includes sharks, rays and skates.
It’s not entirely incorrect to think of stingrays as flattened sharks. [...]
There are a few different answers here, depending on what type of fish we are asking about.
The most sophisticated types of fishes, the bony fishes, have a swim bladder. The fish can essentially inflate the swim bladder with gas from a special gas gland. The gas is basically just oxygen from the fish’s blood.
Bony fishes [...]
They are egg cases for a juvenile skate. The skate is related to sharks and rays. Sharks, skates and rays all have a skeleton made up of cartilage – the bendy material that is found in our noses and ears.
One tiny skate will hatch from each egg after nine months – hatching under the surface [...]
