• Video 1 AC-invadopodia turn over dynamically before basement membrane breaching.
• Video 2 An AC-invadopodium presages and then occupies the site of basement membrane breach.
• Video 3 Invasive protrusion growth during basement membrane transmigration.
• Video 4 The invadopodia-to-invasive protrusion transition.
• Video 5 UNC-40::GFP enriches at the basement membrane breach.
• Video 6 UNC-40 accelerates basement membrane gap opening.
• Video 7 F-actin formation is focused at sites of UNC-40::GFP enrichment.
• Video 8 F-actin formation is focused at the basement membrane breach in wild-type animals.
• Video 9 F-actin formation is not focused at basement membrane breaches in unc-40 mutants.