Imagine diving to the depths of the Oceans at night and meeting one of the oldest surviving species on the planet considered a "living fossil". Peter Ward, a paleontologist, did that very thing and met face to face a Nautilus.
What about Horseshoe crabs aren't they one of those living fossil thingies? I seem to remember that they are around 400 million years old. Plus they look like WWII helmets, which is always a plus.
They taste like horseshoe crabs.