fifteen elephants
by Mike Fainzilber
carefully balanced
on columns of fat
Believe it or not, this is a haiku about jellyfish – specifically deep-sea jellyfish that live at depths where the water pressure is equivalent to that that would be applied by 15 African elephants piled up on the palm of the reader’s hand. When such jellyfish are brought to the water surface they literally vanish, melting into their surroundings.
Recent research has now shown that this is because the lipids (fat molecules) that make up the membranes of deep-sea jellyfish are specially adapted to form cylindrical structures (required for functional membranes) under extreme pressure. When pressures are reduced, these lipids change shape, causing membranes to curve and disrupt.
These findings are important for our understanding of how life is possible in the deep oceans and perhaps other high-pressure environments. Indeed, the researchers were able to take advantage of the new insights to engineer bacteria for survival under extreme pressures.
Further reading:
‘Homeocurvature adaptation of phospholipids to pressure in deep-sea invertebrates’, 2024, Winnikoff, J.R., et al., Science. Available: https://doi.org/10.1126/science.adm7607
‘How jellyfish survive pressures that would crush you into oblivion’, 2024, Cummings, S., Science. Available: https://www.science.org/doi/10.1126/science.zdvphja
Author bio:
Mike Fainzilber’s day job is a biologist. He began writing haiku and senryu during the pandemic, and this side effect of COVID-19 has not worn off yet. Editors in his two spheres of activity have been known to suggest that he should best restrict his efforts to the other sphere. Find out more about Mike’s research via his lab’s website and connect with him on X/Twitter @MFainzilber.
Read more sciku by Mike: ‘The deepest shade’.