One day when it was autumn here, I was walking on the beach with a friend and I realized that there were strange looking brown colored soft and hairy balls on the shore. There were tons of them with different sizes and shapes. I collected a few and took back home with me, had no idea what I was going to do with them but I was impressed by their weirdness.
After a couple of months, an idea popped into my mind: if I coat them with beeswax, they might turn into rock hard beads, which was exactly what happened. Then I made some necklaces with them but still got no idea what they were. Luckily I had a friend who was a hydrobiologist and I asked her if she knew them. Then the mystery has been solved! It is called Posidonia oceanica (commonly known as Neptune Grass or Mediterranean tapeweed) which is a seagrass species that is endemic to the Mediterranean Sea. It forms large underwater meadows that are an important part of the ecosystem. Balls of fibrous material from its foliage, known as egagropili, wash up to nearby shorelines.