“Architect” on the coast

Sandcastle worm: masons under the waves of ancient Roman building a house to use stone and lime, brick and stucco can not do without modern architects. A sandcastle worm living near the coast of California, USA, is a mason under the waves. Sandcastle worms have a mineral shell, but instead of secreting the shell directly like mollusks, they secrete a mucus. They use a secreted gelatinous liquid to glue sand and shell fragments together to build a strong tube. At low tide, the sandcastle worms return to the tubular “house” and close their tube houses; at high tide, they extend their tentacles from the tube house to find food on the water.
   Many marine worms use sand and shells to build similar tubular houses. Sandcastle worms are the worms that live in groups to build tubular houses. Many sand castle worm-shaped tubular houses are connected into a piece of reef with a radius of several meters, and become a highly textured habitat in the intertidal zone. These reefs formed by living organisms are so sturdy and durable, and scientists have begun to study the industrial use of the gelatinous liquid secreted by sandcastle worms.
   Hole in the stone shell: self-defeating those who
   wear the stone shell, also known as sea bamboo, shell stone quarry, just a few centimeters in length, shaped like an egg, but the front end a little more flat, two shells, looks like a winter bamboo shoots. The name of the bamboo shoots came from this.
   Piercing stone is a bivalve mollusk. Although it did not build a pyramid for itself like the ancient Pharaoh, it spent its entire life digging for itself. Not only do they dig holes in the soft sand, some pierced shells can even drill through the rocks.
   When the piercing larvae land on a boulder or bedrock, rows of tiny teeth on their newborn shell begin to grind holes. The stone-penetrating muscle can contract vertically and horizontally, so it can dig down a bit like a drill. Many pierced shellfish gather together, and the hard rocks will become potholes like sponges. As the digging pipeline goes forward, they trap themselves in long rock caves, and eventually bury themselves in the stones, behind them. Leave caves that provide shelter for other animals.
   Purple Sea Urchin: Sand Porter
   Purple sea urchins live in rocky areas where large seaweeds flourish. They like to inhabit the backlit areas of rocky reefs or between stone gaps. They often drill holes in the habitats and hide in them. Strong regeneration ability, spines and other external organs can be regenerated after the damage, shell cracks and fractures can also quickly recover.
   Construction projects mean a lot of excavation work, and purple sea urchin is one of the most efficient excavators. These spiky little spheroids used their teeth to file the rocks underneath, digging small holes in the rocks, producing a lot of sand. A sea urchin leaves only small traces in the intertidal zone, but a large number of sea urchins can produce millions of tons of sediment on coastal rocks every year.
   From Alaska to northern Mexico, purple sea urchins produce about 100 tons of sand per 10,000 square meters of coast each year, which is equivalent to the amount of sand that a medium-sized river spit into the ocean each year.
   Perforated sponge: senior architect
   perforated sponge is a senior architect, it can build “apartment” on the rocks and limestone rock, like the windows of a modern high-rise buildings, as only an occasional glimpse of the scenery to outsiders.
   Perforated sponges secrete an acid that breaks calcium carbonate rocks and shells into many interconnected tiny tunnels. After staying in these “apartments” they built, outsiders can only glimpse through the tiny gaps when the sponges collect food. Orange Or bright yellow figure. Behind those larger “windows”, many perforated sponges clustered in the cavities and passages of the more spacious sponge “apartments”. The yellow filaments of the perforated sponges protruded from the rows of small holes in the rock, which were the “apartments” they hollowed out.
   Sand crab bubble: the animal kingdom Sisyphus
   Roman writer, architect Vitruvius wrote that good architecture requires three qualities: robust, practical and aesthetic, but some animals are architects built buildings such as short-lived, It still exists today and will disappear tomorrow. This kind of animal architect is like Sisyphus in Greek myth, repeating ineffective and hopeless labor.
   On the coasts of Australia, Southeast Asia, and Africa, the owner of this “short-lived” building is sand crab. Sand bubble crab is a kind of crab and a crustacean. There are countless sand-bubble crabs on the beach, the big ones are the size of pigeon eggs, the small ones are the size of mung beans, or even smaller. They are the same as the beach and cannot be distinguished without careful look. They were very alert and rushed into the hole as soon as they moved a little.
   Every day when the tide recedes, the sand crabs left the cave and began to shovel sand into their mouths. They suck up food residues, spit out the sand, collect them into small balls, and then move on, leaving a beautiful landscape on the beach. The next day, the rising tide dissolves these small balls, covering the sand with food debris, and the sand bubble crabs resume their work at the next low tide. Although their labor is of little practical use, even the great architect Vitruvius will marvel at these hard-working crabs.
   Although the power of water and wind and the crustal plate structure formed a winding coastline, the hard work of marine animals cannot be ignored. The next time you go to the beach for a holiday, you must pay attention to it. Maybe you can actually meet a few “architects” on the coastline. I am fortunate to appreciate their hard work!