“Biorock technology” is talked about in which one of the following situations?

[UPSC Civil Services Exam – 2022 Prelims]

(a) Restoration of damaged coral reefs

(b) Development of building materials using plant residue

(c) Identification of areas for exploration/extraction of shale gas

(d) Providing salt licks for wild animals in forests/protected areas

Answer: (a)        

Explanation:

• Mineral Accretion Technology, also known as Biorock Technology, involves the use of low voltage electrical currents in seawater to encourage the growth of white limestone structures similar to natural coral reefs and tropical white sand beaches.
• This process causes dissolved minerals to crystallize on structures, forming a substance called Biorock, Seacrete or Seament.
• The resulting material has a strength comparable to concrete and can be used to create sturdy artificial reefs that allow for rapid coral growth.