The emergence of extensively drug-resistant bacterial infections has intensified interest in phage therapy as an alternative treatment strategy. This research reveals a previously underappreciated survival mechanism that could complicate therapeutic approaches against one of medicine's most challenging pathogens. Mycobacterium abscessus, a rapidly growing nontuberculous mycobacterium responsible for severe pulmonary infections, demonstrates the ability to alter its surface morphology from smooth to rough variants when confronted with bacteriophage attack. This morphological switching represents a dynamic defense mechanism that allows bacterial populations to survive viral predation by presenting altered surface receptors that phages cannot recognize or bind effectively. The discovery challenges current phage therapy protocols that typically focus on targeting rough morphotypes while overlooking the adaptive potential of smooth variants. In the broader context of antimicrobial resistance, this finding illuminates how bacterial pathogens employ phenotypic plasticity as a survival strategy against both traditional antibiotics and emerging biological therapies. The implications extend beyond M. abscessus to other mycobacterial species that exhibit similar morphological flexibility. For patients with cystic fibrosis and immunocompromised individuals who frequently develop M. abscessus infections, this research suggests that effective phage therapy will require cocktails targeting multiple morphotypes simultaneously. The study's limitations include its focus on laboratory conditions, which may not fully represent the complex host environment where additional selective pressures influence bacterial behavior. This represents confirmatory evidence of bacterial adaptive mechanisms while opening new avenues for combination therapeutic strategies.