You can kill a cluster of Barnacles by throwing any sort of an explosive towards them, like an oil canister. These classic Half-Life enemies first appear in Chapter 2: The Quarantine Zone.

Barnacles are natural barometers and their distribution has been greatly affected by ever changing weather conditions. Professor Richard Fortey investigates the effect that global warming has had ...

Barnacles are natural barometers and their distribution has been greatly affected by ever changing weather conditions. Professor Richard Fortey investigates the effect that global warming has had ...