Whales come up to "vent" every ten to fifteen minutes. A common myth is that whales can go hours without breathing air.
Ventrification is the purification of vent gases. It is most often associated with foul odors in plumbing vent stacks being deodorized by vent pipe filters.
An abat-vent is a series of strips of wood, often found on a belfry, which are used to let light and air in.
daily
4 yars
There are many factors which need to be considered when determining how often one should clean a dryer vent. Most households should clean their dryer vent with a brush at least twice a year. The dryer vent should also be cleaned when drying time becomes noticeably longer than it has been previously.
Today it is often called "the whale."
Whale tails are symbols of good luck, speed, and strength. They are often worn as a good luck charm.
Whale Sharks are Sharks "big as a whale". They Breathe with gills and don't have to Surface. They often do though, b/c they find a lot of food Close to the Surface.
Where ever there is a vertical vent fault in the tectonic plates.
fish or small marine mamals
Whale sharks rarely eat fish. They most often eat like whales (small stuff like plankton), hence the name "whale shark".
The whale population has decreased dramatically from the time in which whaling was a popular industry to the present. Whale oil is not used often today because whales are being protected.