They don't have a "climate" by definition.
They will have their individual flow regimes, temperatures, turbidities and salinities I suppose you could call analogous to climate, but it's not a true climate at all.
Underwater Spelunking
Underwater caves are natural formations in the ocean or a body of water that have been eroded or carved out by the movements of water over time. These caves can vary in size and shape and often contain unique ecosystems and marine life. Some underwater caves are popular destinations for divers due to their beauty and diversity of marine species.
No life.
No, sorry there isn't.
no they live in rivers
You can't.
In the underwater sealed cave and in the three regi caves
yes they do but they are born in underwater caves.
Deep Sea Detectives - 2003 Secret Underwater Caves 2-9 was released on: USA: 19 July 2004
By going underwater into the muddy caves once they seek predators
true
Deep Sea Detectives - 2003 More Secret Underwater Caves 3-8 was released on: USA: 20 June 2005