¶(properties)

Bacteriostatic: 
    "Salt kills some types of bacteria, effectively by sucking water out of them. In a process known as osmosis, water passes out of a bacterium so as to balance salt concentrations on each side of its cell membrane. Without water, bacterial proteins such as enzymes cannot function and eventually the cell collapses in on itself."
    https://www.sciencefocus.com/nature/why-does-salt-have-antibacterial-properties/

    http://www.pacificnaturopathic.com/articles/health_benefits_of_sea_bathing.html


Antiseptic:
    "Because it is rich in other mineral salts such as sodium and iodine, ocean water can be considered an antiseptic, meaning it may have wound-healing properties. On the other hand, swimming in the ocean with open wounds may expose you to potential bacterial infections."
    https://theconversation.com/health-check-why-swimming-in-the-sea-is-good-for-you-68583
    -----------------
    However, see below for S.aureus [↓]


Mineralic:
    Via different extraction processes...
    https://www.sciencedirect.com/science/article/pii/S0422989408707621
    ###

¶(harvesting)

* General sanity check... read the environment:
    Is the shoreline clean or is it poluted?

* Know and use the tides!
    There's 4 tides per day:
    2x high and 2x low tide
    ~ +1 hour shift every day
    __________
    Fuerteventura tides: 
        https://www.fuerteventuraplayas.com/en/fuerteventura-weather/fuerteventura-tide-chart

* Don't collect with low-tide:
    ... as it contains more sand, plants and other gunk.
    You can swim deeper in, and collect it there, to avoid pollution.

¶[!!!] (you should sterilie it; → saline)

UPDATE: IMPORTANT; IMPRACTICAL; RE-EVALUATE !

_____________

Tradition or "survivalist" references often don't tell you to do so, but:
    in theory you should be sterilising all ocean water before usage.
    ##### why
    ##### how much energy would this take in practice (so, solar power to induction cooker?)

Seawater is full of bad bacteria/viruses ?!
https://en.wikipedia.org/wiki/Marine_bacteriophage*
###

Boiling for 10 minutes should do the trick, produces *SALINE*.
##### this can almos for sure be shorter

Saline is sterile, sea water is NOT STERILE and HAS *S.AUREUS*:
    "Saline has a specific scientific meaning, however; it's not just salt water from the sea. The key difference between the two is simply about hygiene:
        In fact, there are actually some dangers in going in sea water when you have an open wound.
        While the multiplication of most bacteria stops with contact to salt, there are certain types (such as Staphylococcus aureus) that thrive in salt water."
     https://www.stuff.co.nz/life-style/79116292/does-salt-water-really-heal-open-wounds

¶→ DRINKING

Read somewhere you should drink 1dcl / day
###

Do not drink saltwater directly to hydrate.
### AWK
"Accidentally consuming small quantities of clean seawater is not harmful, especially if the seawater is taken along with a larger quantity of fresh water. However, drinking seawater to maintain hydration is counterproductive; more water must be excreted to eliminate the salt (via urine) than the amount of water obtained from the seawater itself"

¶→ PRESERVING FOOD

(brining)
* https://www.quora.com/Can-saltwater-be-used-to-preserve-food

Merge with frags on this topic!!!
### → 🔗food

¶→ WASHING FOOD

"Wash all your fruits and vegetables. According to the CSE, washing them with 2% of salt water will remove most of the contact pesticide residues that normally appear on the surface of the vegetables and fruits."
https://food.ndtv.com/food-drinks/simple-tricks-to-remove-pesticides-from-fruits-and-vegetables-696039

¶→ MEDICAL

Also called "thalassotherapy".
Ties to the use of the water & shore climate for therapeutic purposes.

See:
    * https://en.wikipedia.org/wiki/Thalassotherapy
    * https://www.dailymail.co.uk/health/article-4071270/The-healing-powers-sea-soothing-skin-clearing-sinuses-expert-reveals-benefits-swimming-ocean.html
    * https://www.researchgate.net/post/What_are_the_effects_of_sea_water_bath_if_taken_daily

¶→ WASHING DISHES

YES:
    * Ceramics
    * Glass
    * Plastic
    * [...]

NO (or combined fresh water after clean):
    * Metal, might stain.
    * Wood, probably keeps the salt.
    * Teflon pans might be harmed when soaked (for longer time) ###
    * [...]


________________________

¶→ LAUNDRY
See ^XXX🔗roles-washing

It works.

Watch out for fragile or soft stuff, the salt will make it "crunchy".
Will deteriorate elasticity and color in some clothes.
Synthetic clothes get salt stains.
### materials?

________
#tomerge !!!
If possible do cycles:
    1) A first wash in ocean water 
    2) Rinse then with fresh water
    You need to rinse it like 3x.
    """ Do a simple test. Take a clean pair of underwear and a teeshirt, soak them in a bucket of saltwater. Rinse them in a bucket of fresh water, wringing out as well as you can. Dry them and wear them. Now repeat with the same salt water soak and two complete rinses and wringings. You'll notice a major difference. Now try it with three rinses. The problem is that salt is hygroscopic. Even if the garment is dried out, the remaining salt attracts atmospheric humidity. The more rinses, the less salt, the less mildew of your teeshirts. But the real problem is that there still remains very small amounts of salt, reducing with each rinse. It's kind of like Zeno's Paradox. Or trying to clean dirty fuel by constantly pumping it out one end and pumping cleaner fuel back the other."""
    https://www.cruisersforum.com/forums/f124/washing-clothing-while-at-sea-17058.html

¶→ WATERING HALOPHYTE PLANTS

Some plants are OK with being watered with significant parts of saltwater.

* https://www.frontiersin.org/articles/10.3389/fmicb.2018.00148/full
* https://sciencing.com/happens-put-saltwater-plants-6587256.html
* ###

¶→ PRESERVING FISH

See → 🔗food

Doesn't work for meat (you neat nitrite salts / saltpeter for that).

¶→ PESTICIDE

Natural Pesticide Spray: 
    Add 2 tablespoons of salt to 1.5 gallons warm water and stir to dissolve, allow to cool to room temperature. 
    Helps with spider mites, caterpillars, cabbage worms and chewing insects. 
    https://tipnut.com/laundry-boosters-vinegar/

¶(basics)

"Sand is a non-renewable resource over human timescales..."
https://en.wikipedia.org/wiki/Sand

* Fuerteventura's sand is composed of tiny biogenic calcareous fragments of forams, molluscs, sea urchins, etc. It is a coral sand in the loose sense of the word.
    https://www.sandatlas.org/the-corralejo-dunes-are-not-from-the-sahara/
    https://en.wikipedia.org/wiki/Coral_sand


http://www.genryo.co.jp/en/50coral.html
#toread


      * properties

* Abrasive:
    "... Soap is generally thought of as "chemical" removal of dirt and oils, while sand is "physical" removal of dirt and oils."
    https://www.reddit.com/r/AskScienceDiscussion/comments/7vyekz/can_i_clean_my_hands_with_sand/

* [...]


      * types

* """Silicia sand is quartz that over time, through the work of water and wind, has been broken down into tiny granules."
    https://www.selectsands.com/what-is-silica-sand/

* [...]


      * harvesting

Read the environment:
    * check polution, mircro and macro
    * is it dry or wed sand
    * etc

¶→ HYGIENE

"Soap is better than water, water is better than clean sand, and clean sand is better than nothing."
https://www.reddit.com/r/AskScienceDiscussion/comments/7vyekz/can_i_clean_my_hands_with_sand/

¶→ WASHING DISHES

"Because sand is fine, coarse, and usually not too absorbent, it will rinse right off. ... Washing with sand, (and not water or soap) is a good way to "clean up" when water is scarce. It will remove dirt and oils, help with sweat, and generally leave you cleaner than using nothing at all."
https://history.stackexchange.com/questions/40081/how-does-one-wash-with-sand

Works well in outside kitchens.
Sterilization is a good idea (parasites!).

These dudes get it
https://www.youtube.com/watch?v=2oz6zRq7KpQ

¶→ CONSTRUCTION

Use depends on the type.
"""50 billion tons of beach sand and fossil sand is used each year for construction."""

:
    * Sandbags:
        Useful for anti-tide as well.
    * Artificial islands & beaches (banned!)
    * Gravel roads
    * Adobe
    * Concrete:
        "Desert sand, although plentiful, is not suitable for concrete. "
    * [...]

¶→ ART

To make clay (and sculptures)
"""
For a simple option, stir together flour, salt, and water to create a basic clay that will dry out fairly quickly. If you want a nice modeling clay, mix together cornstarch, salt, and water. To make pottery clay, harvest clay-rich soil from near running water or from a desert area.
(...)
Variation: If you have dry clay soil in your area, simply scoop up the clay and add water to it. If it holds its shape, you can use it for pottery![25]
"""
→ https://www.wikihow.com/Make-Clay

¶→ TENT WEIGHTS
Hold down tents

Pick:
    * non-sharp rocks — for holding down tarps
    * very heavy & sharp —  for roping (will grab on floor well)
    * heavy & non-sharp — to hold shape & keep within tents (or, full water bottles)
------------
### can combine small + large rock for tying tents?

¶→ BUILD WALLS
### murros

¶→ BUILD FURNITURE

* chairs
* tables / surfaces

¶→ THROW AT DOGS

"Every crazy dog in Canary islands knows the gesture of reaching down for a rock."
-- Canarian person

¶→ SKIN HYGIENE

"UV does kill stuff - but although it may kill some bacteria, it won't remove the oils, dirt, dead skin cells, klingons, toe butter, and mank collecting on your bod. UV also kills skin cells."
https://outdoors.stackexchange.com/questions/4114/how-is-hygiene-possible-with-ocean-water-only

¶→ WASHING CLOTHES

"Let the clothes take 2h sun baths. This will kill some of the bacteria growing on your clothes, but same as above, it won't remove the oils, dead skin cells, dirt, etc that has been impregnating your clothes."""
https://outdoors.stackexchange.com/questions/4114/how-is-hygiene-possible-with-ocean-water-only

¶→ HEATING WATER

Warm water in the sun!
Based on our own experience @ CHT7BF
###

¶→ WOOD CONSTRUCTION
:
    * Houses
    * Furniture (chairs, ...)
    * Surfaces (platters, tables, ...)
    * [...]

¶(wood harvesting)

Green branches?:
    in principle are fine, just a bit more smoke...
    if it rains that should even not be so bothering
    <D, on making fire during rain in Slo

Processed wood?:
    Always check for chemicals (glues etc!)
    The smoke will be toxic, extra precausions are needed when you plan to cook on it
    ###

¶→ COOKING

Use ember, not direct fire.
:
    * boiling water
    * frying
    * smoking
    * aluminium foil
    * [...]

¶Mechanical behaviour of Sea Urchin spines (under compression)

... "as a model system for permeable light weight ceramics with graceful failure behaviour"
(the poetics of this...!)

"""
The spines of pencil and lance urchins Heterocentrotus mammillatus and Phyllacanthus imperialis were studied as a model of light-weight material with high impact resistance. The complex and variable skeleton construction ("stereom") of body and spines of sea urchins consists of highly porous Mg-bearing calcium carbonate. This basically brittle material with pronounced single-crystal cleavage does not fracture by spontaneous catastrophic device failure but by graceful failure over the range of tens of millimeter of bulk compression instead. This was observed in bulk compression tests and blunt indentation experiments on re
"""
    → https://www.researchgate.net/publication/236903463_Sea_Urchin_Spines_as_a_Model-System_for_Permeable_Light-Weight_Ceramics_with_Graceful_Failure_Behavior_Part_I_Mechanical_Behavior_of_Sea_Urchin_Spines_under_Compression

¶[!→] Difference between soap & detergent

* "While:
    * detergents are free-rinsing (meaning they don't leave a residue),
    * soap needs a clear water wash after application or it will leave a film."
https://www.nycoproducts.com/resources/blog/simple-science-the-difference-between-soap-and-detergent/

* https://www.cleancult.com/blog/whats-the-difference-between-soap-and-detergent/

¶[→] A clean ass without toilet paper? -- lol
### very 2020 pandemic

* bidet / water
* brush on a stick
    https://www.mentalfloss.com/article/48950/what-did-people-use-toilet-paper

¶[!!→] DIY -- Eco friendly cleaning

SOAP

"jabon natural"

BUY:
    * Ivory soap
    * Bon-Ami

MAKE:
    * Salt + vinegar + lemon juice
    * Grated soap - baking soda (bicarbonato de sodio) - water - etheric oil

https://www.organicauthority.com/live-grow/clean-uses-with-lemon-and-salt

¶[!!] SCIENCE/ANTIPEST/### -- Quality and dangers of these resources

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC145303/
Pathogenic Human Viruses in Coastal Waters
"""
This review addresses both historical and recent investigations into viral contamination of marine waters. With the relatively recent emergence of molecular biology-based assays, a number of investigations have shown that pathogenic viruses are prevalent in marine waters being impacted by sewage. Research has shown that this group of fecal-oral viral pathogens (enteroviruses, hepatitis A viruses, Norwalk viruses, reoviruses, adenoviruses, rotaviruses, etc.) can cause a broad range of asymptomatic to severe gastrointestinal, respiratory, and eye, nose, ear, and skin infections in people exposed through recreational use of the water. The viruses and the nucleic acid signature survive for an extended period in the marine environment. One of the primary concerns of public health officials is the relationship between the presence of pathogens and the recreational risk to human health in polluted marine environments. While a number of studies have attempted to address this issue, the relationship is still poorly understood. A contributing factor to our lack of progress in the field has been the lack of sensitive methods to detect the broad range of both bacterial and viral pathogens. The application of new and advanced molecular methods will continue to contribute to our current state of knowledge in this emerging and important field.
"""

¶[!] SYMBOL -- proven VS non-proven knowledge
make a list of symbols that tell the level of scientifically prooven applications vs traditional / folk knowledge

¶[!!] RESEARCH CANARIAN SPECIFIC PLANTS/RESOURCES

Merge: ~ ^CHT🔗ecology !!!
>d

* https://www.academia.edu/7183303/Wild_plants_gathering_Canary_Islands

* https://en.wikipedia.org/wiki/Category:Flora_of_the_Canary_Islands

¶[!!→] FOOD/WATER -- Is it okay to drink water from plastic all the time?
:
    * Should we be using Brita filters?
    * Activated Charcoal?
        https://www.waterfiltersfast.com/5-Benefits-of-Using-Charcoal-Water-Filters_b_64.html



<--------------------------------------------------- ((new))

https://en.wikipedia.org/wiki/Zingiber_zerumbet
Hawaii (etc) plant used for shampoo/conditioner, food, and more.


https://obrag.org/2013/07/native-american-skills-making-rope-out-of-agave-or-yucca/
rope from plants that we can also find here!
#textile #biotextile

Electrolyzed water
https://newatlas.com/around-the-home/egret-electrolyzed-water-disinfect/