Tadpole.
When an amphibian is a larva, it will have gills. As it matures into the adult stage, it will develop lungs.
None
Larvae are the hatched form of an amphibian that is different from the adult. A larva of an amphibian may be free swimming (e.g. tadpoles) before the metamorphosis to an adult (e.g. a frog).
Larvae are the hatched form of an amphibian that is different from the adult. A larva of an amphibian may be free swimming (e.g. tadpoles) before the metamorphosis to an adult (e.g. a frog).
frog
frog
Mammal.
A porpoise is an aquatic mammal.
The free swimming ciliated larva seen in most aquatic mollusks is called a trochophore larva. It has a ring of cilia around its middle that aids in movement and feeding. Trochophore larvae eventually develop into the adult form of the mollusk.
Axolotols do not really skip the larva stage. But when they hatch, they are a larva and they do not metamorphose into an adult. They stay that phase all their life.
A tortoise is neither an amphibian nor an aquatic animal. It is a reptile that lives primarily on land and breathes air. Tortoises have a hard shell and are known for their slow movement.
A newt is an aquatic amphibian of the family Salamandridae, although not all aquatic salamanders are considered newts. Newts are classified in the subfamily Pleurodelinaeof the family Salamandridae, and are found in North America, Europe and Asia. Newts metamorphose through three distinct developmental life stages: aquatic larva, terrestrial juvenile (called an eft), and adult. Adult newts have lizard-like bodies and may be either fully aquatic, living permanently in the water, or semi-aquatic, living terrestrially but returning to the water each year to breed.