Yes, many due in their larval form.
Many amphibians are born with lateral lines. As they grow older, some amphibians such as salamanders lose their lateral line because it's no longer a necessity due to the fact they also walk on land.
Bi-Lateral.
They are replaced. The old lateral field is taken out, new lines and gravel is are put down and covered.
No.
They are straight lines that form the sides of a polygon.
the lateral line of a fish is a sensory organ,picking up vibration in the water,alerting fish to danger or prey.
penguins,bears,polor bears,chickens and pigs
the lateral lines run along both sides of their body. they detect movement and vibration in the surrounding water. they are also sensitive to light and smell.
Fish have lateral lines as vibration sensors.Eyes as visual sensors.
They do not have a lateral line but at least some have a lateral line analogue, the epidermal head lines, that are compromised of mechanosensory hair cells and detect water displacement (Budelmann & Bleckmann 1988, J Comp Physiol A)
Lateral direction runs from east to west and longitudinal direction runs from north to south. Latitude lines are parallel and equidistant from each other. The distance between latitude lines is approximately 69 miles. The equator is at 0 degree latitude. Longitude lines are known as meridians and converge at the poles. Longitude lines are widest at the equator.
the lateral lines. They pick up vibrations.