I have reassured her that we are not vampires. Our technology just required the (blue) blood of these animals. More important: We’re moving past that stage. Our horseshoe crab populations should recover. If we’re careful.
As an example of tribalism and its deep instinctive roots — Callitriche has discovered how we’ve been treating horseshoe crabs (Limulus polyphemus). She was appalled. Her reaction is deep reflex. Even though she has no more in common with horseshoe crabs than she does with humans. That is to say, very little, being a product of a different planet’s evolution. But the crabs look something like her species: She’s an invertebrate but with a non-oxygen-based metabolism. The similarity to humans, such as it is, is that she is intelligent. She is also showing a parallel version of our instinctive compassion. This is one of the things that makes us human. So it makes her similar us. Or, as she says, makes us similar to her.