No they do not. They are classified as vertebrates however they do not have a true backbone. It is in fact made of cartilage and is therefore not classed as a bone hence they do not have a back'bone'.
Shark
There are two subclasses of cartilaginous fish. Elasmobranchii and holocephali. The subclass elasmobranchii encompasses sharks. The subclass holocephali encompasses rays and skates.Sharks, skates, and stingrays.
The spinal vertebrae of a shark are made of cartilage, not bone, so you could rightly say sharks are vertebrates with no backbone. If the question referes to an animal with absolutely no spine at all, the next most closely-related animal is the lancelet.
Insects do not have a backbone, they have an exoskeleton. Most insects have wings. Therefore insects have no backbone, but they do have wings.
No, shark dorsal fins are not made of bone. They are made of cartilage, a flexible and lightweight tissue that makes up the skeleton of sharks. This composition allows their dorsal fins to be both strong and flexible for swimming efficiently.
A tiger shark has a backbone
yes
Yes
Yes it is
An invertabrae are animals with no backbone. Most the earths animals hve no backbone! Some examples are: * squid * shark * jellyfish * earthworm and lots more!!!
yes
Shark
No, a squal, specifically a squalid fish like a shark or ray, does not have a backbone in the traditional sense. Instead, they possess a cartilaginous skeleton made of cartilage rather than bone. This gives them flexibility and buoyancy in their aquatic environment.
Shark teeth are sharp and horse teeth are flat on the tip. Shark teeth are smaller than horse teeth. Horse teeth are big and you can tell how old they are just by their teeth! :)
There are two subclasses of cartilaginous fish. Elasmobranchii and holocephali. The subclass elasmobranchii encompasses sharks. The subclass holocephali encompasses rays and skates.Sharks, skates, and stingrays.
Tiger sharks are not invertebrates by most definitions of the word. It is true that they do not have a backbone, but instead their entire skeleton is composed of cartilage. However, most cartilaginous fish are referred to as vertebrates.
The megalodon shark is a vertebrate. Like all sharks, it belongs to the class Chondrichthyes, which are characterized by having a backbone made of cartilage rather than bone. This massive prehistoric shark is known for its large size and predatory nature, making it one of the most formidable creatures in marine history.