All About Sand, Pebbles & Seaweed
How much do you know about these three common finds at the sea? We sometimes take things for granted, when we see them everyday. So let’s get to know the three most common items we can find at the beach.
Whether a beach is sandy or pebbly, usually depends on the local landscape. Sandy beaches are usually found in bays, where the waves have less energy, and the water is shallower. The colour of the sand depends on what it’s made from. In England, our sand is nearly always brown, due to iron oxide from broken down rocks. In Caribbean, the sand is pink due to coral or white in California, due to mineral quartz.
Pebbly beaches are often found near cliffs, which have higher-wave energies. The ocean water gradually erodes rough rock to make them smooth (a bit like old pirate bottles that are smoothed over time to make seaglass, often used for jewellery).
You should never take pebbles from the beach, because they form natural sea defences, to break the form of big waves. If too many are removed, this could cause coastal floods.
Seaweed is simply algae that grows around our shores. Don’t harvest slippery seaweed unless you know what you’re doing. Sustainable companies just ”give seaweed a haircut’, leaving the roots (seaweed is used in food and beauty use, but seaweed should not be consumed by people with iodine or thyroid issues). Leave seaweed be, as it forms an important part of the ecosystem. As someone once wrote ‘it may be just seaweed to you, but it’s a universe to a shrimp!’
Don’t let dogs eat seaweed or play with the fronds. Once dry, it can expand in the stomach and become an emergency.