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Because unlike other sharks, grey nurse sharks give live birth, other sharks lay water-proof sacks when nurse sharks have a placenta like other mammals. Seperating mammals from amphibians and repitles is if they gve live birth.
Actually all sharks are fish.
Grey nurse sharks are classified as fish so, like all fish, they are vertebrates. They have a spine and spinal cord, and an internal skeleton. They belong to the Phylum Chordata.
Mammals, birds, fish, reptiles and amphibians are all vertebrates.
Whales and sharks are vertebrates because they have a backbone or spinal column. Invertebrates do not have a backbone.
They both have a spinal cord protected by vertebrae. That is the key trait of all vertebrates. So whales and sharks are both vertebrates.
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Are snale's vertebrates?
No, they are invertebrates
Are spiders vertebrates?
No, Spiders are invertebrates.
Are lizards invertebrates?
No, lizards are vertebrates because they have a backbone or spinal column. Invertebrates are animals without a backbone.
Are snakes invertebrates?
Snakes are not invertebrates; they are vertebrates like all reptiles. They have a dorsal nerve cord and a spine.Snakes are vertebrates - they have a complete internal skeleton including skull, spine and ribs. Invertebrates lack any internal skeleton.
Are gorillas vertebrates or invertebrates?
Gorillas are vertebrates. They belong to the group of animals called mammals, all of which are vertebrates because they have a backbone or spinal column.
Are whales sharks invertebrates or vertebrates?
They both have a spinal cord protected by vertebrae. That is the key trait of all vertebrates. So whales and sharks are both vertebrates.
Are whales invertebrates?
No, they have a backbone just like you do.
Are blue whales invertebrates or vertebrates?
Blue whales are vertebrate. They are also, just like us, mammals.
Are angle sharks invertebrate or vertebrate?
Animals that have backbones are considered vertebrates, while animals without are invertebrates. So sharks, having backbones, are vertebrates.
Are sharks and whales vertebrate?
Yes, they both have back bones and are considered to be vertebrates.
Are fish vertebrates of invertebrates?
invertebrates
Is the Great White Shark a vertebrate?
Yes, the Great White Sharks are vertebrates. In fact, all fishes and sharks are vertebrates.
What are the 5 difference of vertebrates and invertebrates?
vertebrates and invertebrates different?
Do caterpillars have a spine?
Caterpillars don't have spines, they are invertebrates. Dogs, birds, whales have spines because they are vertebrates. Spiders, butterflies, moths don't have spines they are called invertebrates.
Are frogs and toads vertebrates or invertebrates?
They are vertebrates.
Why vertebrates and invertebrates are differ?
Vertebrates have spinal chord and invertebrates don't.
What is the difference between vertebrates an invertebrates?
Vertebrates have spines & invertebrates do not have spines.
