The deeper the diver goes, the higher the pressure is.
Because of very high water pressure.
The collective noun is a bubble of scuba divers.
Many people use a SCUBA suit for diving. Sport divers, police divers and some Navy recovery divers.
scuba divers
Free divers do but scuba divers do not need to. Scuba divers take their air with them and would have no need to hyperventilate.
Scuba divers require increased air pressures in their air tanks while diving because the pressure on their bodies increases.
They swim
seebees
In the Water....
Other animals that have flippers include dolphins, whales, seals, sea lions, and sea turtles. Flippers are specialized limbs that help these animals navigate through water efficiently.
This is to provide thermal protection usually, though it also protects against getting cuts scrapes or stings from rocks or corals, the main reason is thermal protection
Scuba - self contained underwater breathing apparatus
Scuba Bob's Ocean Quest - 2006 Fearless Divers Scuba Rangers 2-7 was released on: USA: 2007