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19
votes
4answers
4k 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
864 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. ...
12
votes
2answers
5k 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?
10
votes
1answer
204 views

What's that stinging feeling when I swim in the sea?

When I swim in the sea around Singapore, I get stinging/prickling/electric sensations on my skin in certain areas of the water sometimes. There aren't any visible creatures nearby. What are these? ...
9
votes
3answers
128 views

What Navigation Aids can I make on an island with only a knife?

In a recent discussion about navigating from a deserted island, it was suggested that if I have a knife and natural resources I could create my own navigation aids. In this instance I was planning to ...
9
votes
2answers
4k 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 ...
9
votes
1answer
313 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 ...
7
votes
1answer
89 views

Is this sand dollar with coral barnacled to it at all rare?

While taking my usual stroll along Del Monte beach in Monterey yesterday, I found this sand dollar with coral attached: Is this rare at all? Any observations on why it would wash up onto the beach? ...
7
votes
1answer
58 views

How do Plover sentinels give the “move out” signal?

During my usual weekend morning jaunt along Del Monte Beach in Monterey (California), I noticed for the first time the Plovers, who normally seem to forage nonstop, actually taking a communal break. ...
6
votes
3answers
59 views

Why do Sandpipers and Plovers “hang out” together?

I walk on Del Monte beach in Monterey, California quite often. I see LOTS of Sandpipers there; and always with them are Plovers (which remind me of little frenetic Killdeer). The Sandpipers dig into ...
6
votes
2answers
477 views

What sea life may be hazardous when rockpooling?

Back on my childhood nostalgia train... After thinking about Crabbing I began to wonder if there are any particular sea life that I might have to be wary of when going rock pooling along the ...
6
votes
2answers
42 views

Can you use a pull buoy in tidal water easily?

Ok so I'm getting a pull buoy to help with my pull exercises when swimming (and a kickboard for the same with kick exercises) and I want to know if I were to go to a lake or the sea and swim, is it ...
6
votes
2answers
1k 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. ...
6
votes
1answer
59 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?
3
votes
0answers
70 views

Activity for long voyage [closed]

What should the crew and passengers do on the long voyage? If they do nothing, the attention is scattered and become remiss. You can begin to wash the boat, but I do not think that is the best ...