03 Barnacle Introduction

03 Barnacle Introduction

The base of the shell attached to the substrate is membranous in some species, but others have a white calcareous disk that often remains on the substrate after the barnacle has died and been swept away (as in this image).

Full INTRODUCTION TEXT at 01 Barnacle Introduction
Albums with full accounts of all British acorn barnacle species at marinvert.senckenberg.science/image-browse/7215763361…