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14

While this answer on a different question related to safety precautions for caving explains most of the what-to-have-along things, I'd like to put forth some points that can help you understand situation better. Get confirmed information about Tide times and tide chart. Avoid planning one such venture on a Full Moon or New Moon, since the Moon and the ...


10

There is one poisonous: the Desmarestia. The other species should be okay. However, I can't say anything about if they are "worth eating" :) Desmarestia is a genus of brown algae found worldwide. Members of this genus can be either annual or perennial. Annual members of this genus can produce and store sulfuric acid in intracellular vacuoles. When ...


9

In addition to WedsPashi's answers, in the past when I've waded and scrambled around coasts I've gotten scratched and pierced by sharp mussels and rocks. I had a friend once step on a particularly long barnacle which broke inside his foot and we had to go to the ER. Also bear in mind that sea caves are formed in places that ocean currents batter the coast, ...


7

The blue-ringed octopuses (genus Hapalochlaena) are three (or perhaps four) octopus species that live in tide pools and coral reefs in the Pacific and Indian Oceans, from Japan to Australia (mainly around southern New South Wales and South Australia, and northern Western Australia). They are recognized as some of the world's most dangerous marine animals.


6

Just taste it. As in this answer, normal saline matches what you have in you at 9 grams of salt to a liter of water (this is 9 times as much as Gatorade). If you ever try to drink the stuff, its way too salty to be enjoyable (and is normally given intravenously for dehydration). So if the salty water is too salty to drink, that means you shouldn't. Some ...


4

In the UK one of the more dangerous sea creatures is the weever fish. They are often found in shallow, sandy water, particularly around Cornwall and the south west, and have venomous spines on their backs. Being stung is very painful and can result in severe swelling. Stings are generally caused by standing on them unawares while barefoot, so can easily be ...


4

From the coasteering excursions I and my family have been on in Scotland, the rest of the UK and some other European countries, there appears to be no consistent grading. What I have seen is use of common grading for the climbing parts plus usually a comment on the "relative danger" on the drop to water and swimming sections. This commentary may have height ...


1

Unfortunately, much of the shoreline of Mt Desert Island looks like that, particularly on the east and south. Stop and think about what you were doing before and after being there. There is only one way onto the island by car. Did you see this before or after getting to Bar Harbor? How long before or after? Do you remember which way the shore was facing?...


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