Tag: sea urchins
A Remarkably Candid Statement About an Unsolved Evolutionary Puzzle
According to current systematic theory, everyone reading this right now belongs to the taxonomic category Deuterostomia.
Applying the Design Filter to Biological Sands
If you look closely at beach sand, you may find some grains that stand out. They are shaped like spirals, stars, or striated cones.
By Design — How Pearls Get Their Luster
The highly valued optical properties of pearls come from sophisticated processes of biomineralization involving proteins and crystals.
Placozoa: An Evolutionary Leftover?
Simple, small, and worldwide in distribution, the placozoa don’t fit any clear evolutionary picture.
Beauty Leads Us Home
Why is the world a beautiful place and why does it touch me?