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14

The suds are caused by protein. Protein is usually consumed by the nitrogen cycle and finally plant life, but if there is enough water churning by wind and white caps and breaking waves it can froth up and dry out and get blown away and get trapped a gyre where is eventually melts back down into the water. Sometimes it gets blown into a beach as you've seen. ...


9

No, gulls (of some species at least) steal food from other birds by moving them until they drop it. They must then be adept at snatching the falling food in mid air. There's material of interest in the Wikipedia article on seabirds - search for kleptoparasitism, reference 23 looks particularly interesting. The article on mobbing also hints in this ...


8

For practical purposes, rarity is beyond difficult to answer. Sure there may be a biological survey buried somewhere in some journal, but specific topics like that don't get much traction outside of small specialized communities of biologists. For a heuristic, I have used a combination of google images and pricing. For google images there are certainly ...


5

This is really just a hypothesis, but here in the UK we also get mixed wader flocks. A significant reason for large/mixed flocks to occur is predation. Watch out for what happens when a large flock of waders (almost by definition very exposed on the ground) spots a falcon. They scatter in every direction, not maintaining a straight line for any time at all. ...


5

What your describing is flocking. It's an extremely complex behaviour where individuals react to their immediate neighbours giving the sense that the whole flock moves as a whole. Birds naturally flock (in the air or on the ground) as a defensive mechanism against predators, etc. Though complex there appears to be some basic rules to the mechanism as a whole:...


5

PLEASE NOTE: The search function on my computer is malfunctioning, and I lost the reference links to the information presented here. I'll add them as soon as things are fixed! What you're seeing is a huge washing up of tuna crabs that has created "red beach" all up and down the California shoreline, as well as other states. This is not the first time it ...


5

The ocean floor is almost entirely undisturbed by waves - What you are finding comes from the coastal littoral. You can gain some general estimates from direction and strength of storms, but the movement of the sea is chaotic overall. Oceanographers can make general statistical predictions, but there is just too much to track. Read this article on the 28,...


5

Sea foam, ocean foam, beach foam, or spume is a type of foam created by the agitation of seawater, particularly when it contains higher concentrations of dissolved organic matter (including proteins, lignins, and lipids) derived from sources such as the offshore breakdown of algal blooms. -- Wikipedia (2016-07-25): Sea foam Human waste can be a ...


4

This really depends on what your situation is. You want to fish from the shore, so how bad is the surf? The bigger the waves, the larger the weight. Also, you could use lead like this. The "arms" help the lead to dig into the sand, and then turn over once you put some pressure on them and reel it in. This way, since fish hook themself once they take the ...


3

An interesting article from The National Oceanographic and Atmospheric Administration Research lists causes of sea foam, most of which have been covered by all your other answers. It does say that the formation of sea foam varies by different coastal regions. While in general, sea foam is considered safe to humans and birds, and even beneficial, there have ...


3

Sea foam is from diatoms breaking up (unless it is from pollution). Normally, it is from diatoms, which are a form of plankton that have a glass-like silica shell (also their broken shells make diatomaceous earth). When their shell breaks, it mixes with the water and makes sea foam!


3

You're right that the various species of shorebirds, including in your area, like most of the same types of foods. The diet is primarily comprised of invertebrates such as crustaceans, worms, mollusks, and insects. Although some species are indeed bigger, they tend to co-exist peacefully. One reason is that they have different types of bodies and bills, ...


2

In my experience, beaches that are less protected are the ones which have the most items washing up on them. For example, in Tofino on the west coast of Vancouver Island, many items arrive from Japan because there is no land in between those places, whereas on the east side of the island, there is almost nothing washing up from Japan because there is so much ...


2

By lifting one leg into their down, they are conserving heat.


2

I think a reasonable guess would be jellyfish larvae, also known as "sea lice." Sea lice are actually the microscopic larvae of jellyfish and other ocean stingers which contain the same nematocysts (stinging cells) as mommy and daddy. (They) are probably the most commonly encountered stinging threat to divers and swimmers at the beach. There's a ...


1

"hanging out" together happens because different species eat the same food, require the same nesting areas, migrate in the same flyways, etc. Many species compete/become territorial for nesting areas, but less so for food sources.



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