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17
votes
4answers
2k views

What are the dangers of swimming in natural waters?

What are the dangers of swimming in natural bodies of water? In essence I would like to know about all types of waters, but I am mostly interested in sea because it is most relevant to me. Like many ...
13
votes
2answers
488 views

How to estimate distance in sea

While kayaking or swimming out in the open waters, it is quite important to be able to judge distances accurately before attempting to get from one point to another, such as from island to island. ...
10
votes
2answers
2k views

How do I desalinate seawater?

I know I shouldn't drink seawater (because of the salt it contains), but how can I desalinate it?
9
votes
1answer
244 views

What sort of weird (interesting) rock is this?

I apologise if I am posting this in the wrong place (also wasn't sure what tags to choose) This interesting pebble caught my eye the other day when I was wandering around on an Anglesey beach in ...
8
votes
2answers
236 views

How to maximise the chances of survival when stranded in open sea?

I read with interest about news of a scuba diver being stranded in the open sea when the diving operator failed to account for all members of a group. Mishaps like this and accidents such as boat ...
6
votes
2answers
589 views

How to estimate current speed and direction at sea?

In an episode in the tv series "I shouldn't be alive", crew members of a yacht racing team got caught in a violent storm and found themselves stranded in the Gulf of Mexico after their boat capsized. ...
4
votes
1answer
48 views

Dangers of currents for windsurfers

Can sea currents be dangerous for surfers? How common would this be? Should I ask locals about currents before surfing at a new spot?