they need replaced,check out www.zcentre.co.uk
by the fat on the bodies and food and water
It has slippery skin which keeps the seal easier to swim through the cold water.
axel grease is very sticky and adheres to where you apply it. Keeps out water and seals out dirt.
Call a heating contractor to inspect the furnace as soon as possible.
your a/c water drainage hose might be clog causing water to go inside,check a/c drain hose on the bottom of the car
internal water seals in the motor
It is normal for a dishwasher to leave water behind after a cycle. It keeps the seals from dry rot. The water level should be below the filters. You should not be able to see the water
it is true harp seals live in saltwater.
No, Most seals live on the ice, in the open (when they are not in the water!),
habor seals live in salt water
Seals hunt fish, in the water, all the time
harp seals find water by tracking down water animals and if they see them they know they are getting close the water