What in Darwin’s Name Are Chaetognaths?!

Lynn Margulis classified the Chaetognaths, known as arrow worms, as deuterostomes. Deuterostomy is characterized by  several developmental characteristics including radial, indeterminate cleavage, a posterior position…

View More What in Darwin’s Name Are Chaetognaths?!

Huge Silicate Sponge Spicules and the Evolution of Calcification

The deep-sea sponge Monorhaphis chuni (Hexactinellida) has the world’s largest known biosilica structure! A silicate spicule that can grow up to 3 meters long. That’s…

View More Huge Silicate Sponge Spicules and the Evolution of Calcification

The Tide Pool: Slow Colossal Squid?, Lantern Shark’s Light Switch, Longer is Faster (in Sperm)

An occasional series where I briefly report 3 new studies and tell you why they are cool! ———————————- How could not think of the colossal…

View More The Tide Pool: Slow Colossal Squid?, Lantern Shark’s Light Switch, Longer is Faster (in Sperm)