I enjoy walking the beach and the always changing collection of stuff that washes up. A previous post dealt with trash, the cleaning of which is an ongoing task; but there are treasures to be found as well. This seed is sort of like snow flakes (without the cold that comes with snow): no two are alike.
Usually I only find the individual seeds and if they're not found soon after they wash ashore further 'washing' and exposure to the constant salty breezes dulls them. But every now and then I find a pod. Tough as dried leather, they're worth the effort to break open.