holds good harm or completely displace that native wildlife. on the antarctic island of south georgia, invasive rats brought by whaling ships threaten colonies of seabirds by devouring their eggs. a rat eradication mission dropping tons of poison bait has been declared a success but it took only five years and cost £10 million. the burgeoning antarctic tourist industry is a key area of concern. got antarctic tourist industry is a key area of concern.- key area of concern. got to wash our key area of concern. got to wash our boots. - key area of concern. got to wash our boots. we re i key area of concern. got to i wash our boots. we re not going to taking anything onto the antarctic mainland that shouldn t be there.- the antarctic mainland that shouldn t be there. when we ex - lored shouldn t be there. when we exolored its shouldn t be there. when we explored its impact - shouldn t be there. when we explored its impact back i shouldn t be there. when we explored its impact back in