Features

Live only in salt water

Usually less than an inch in size

White with a yellowish or pinkish hue to them

Have an exoskeleton and jointed legs

Have 4 antennae and more than 8 legs

Snails, limpets, and sea stars eat them

Collect plankton out of the water with small specially adapted feet

Outer shell is volcano-shaped

Protrudes its hairy cirri at high tide to strain small organisms/particles from water churned up by wave action

Live eight to ten years

Location

Attach to rocks but are also common on man-made surfaces such as pilings and boats

Lives at high to middle intertidal

Ranges from Aleutian Islands to Baja California

Uses

A layer of barnacle cement three tenthousandths of an inch thick over one square inch will support a weight of 7000 pounds

At temperatures above 6000°F the glue will soften but not melt, and at 380°F the cement will not crack

It could be used to mend broken bones and hold fillings in teeth if man learned to manufacture it

Said to be good to eat

Taxonomy
[Kingdom] - Animalia
[Phylum] - Arthropoda
[Class] - Crustacea
[Order] - Balanus
[Family] - Balanidae
[Genus] - Balanus
[Species] - Balanus nubilus