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28 votes

What coastal creature leaves braid-like trace that has clear landing and take off points?

This is almost exactly the opposite of what you think it is - it is actually from a burrowing animal, so instead of flying, it is actually burrowing into the sub-surface liquifaction layer of the sand ...
  • 8,505
14 votes

Exploring coastal caves safely?

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 ...
  • 31.6k
11 votes

What coastal creature leaves braid-like trace that has clear landing and take off points?

I too think it's from a burrowing animal. Instead of crab I would say it is some kind of lugworm/sandworm. I found this similar image: The keywords for ...
  • 211
10 votes

Are there any inedible seaweeds on the UK coastline?

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. ...
  • 23.4k
9 votes

Exploring coastal caves safely?

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 ...
  • 221
7 votes

What sea life may be hazardous when rockpooling?

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 ...
6 votes

How can you identify whether brackish water is too salty to drink?

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 ...
4 votes

What sea life may be hazardous when rockpooling?

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 ...
  • 7,079
4 votes

Are coasteering routes graded, or does one have to rely on a qualitative description of the difficulties of a route?

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 ...
  • 24.7k
1 vote

Where exactly is this rocky shoreline in the Downeast region of Maine, USA?

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 ...
  • 21.3k

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