Microscopic Worlds with Major Impacts: Learning from Dr Penelope Ajani’s Algal Art
Sydney SRAP members recently had the pleasure of hosting a special meet and greet event with marine biologist and microalgae expert Dr Penelope Ajani, centred around her photographic exhibition of harmful algae and marine plankton observed through microscopy. The event offered a unique opportunity to experience the intersection of science and art, revealing the hidden beauty and complexity of microscopic marine life.
As Dr Ajani guided attendees through the exhibition, it quickly became clear just how intricate and demanding the study of microalgae can be. Isolating individual cells, preparing samples, and accurately identifying species requires not only technical expertise, but also patience and attention to detail. Despite their microscopic size, these organisms are incredibly diverse, and even small differences can have significant implications.
A key theme throughout the evening was the importance of accurate species identification. Reliable identification is essential for protecting public health and the environment, informing decisions on shellfish harvesting, recreational water use, and responses to harmful algal blooms. Dr Ajani highlighted how robust, defensible data underpin effective environmental management and build community confidence.
Participants also gained insight into the fascinating diversity and life cycles of microalgae, including their reproductive strategies and responses to environmental change. While only some species produce toxins, their impacts can be far-reaching, affecting marine ecosystems, human health, and coastal economies.
The exhibition also served as a powerful reminder of the fundamental role microalgae play in ocean systems. As the base of marine food webs, they support fisheries, regulate biogeochemical cycles, and contribute significantly to global oxygen production — reinforcing that ocean health truly begins at the microscopic level.
Dr Ajani further emphasised the importance of long-term monitoring programmes, such as the Port Hacking phytoplankton time series, which are essential for detecting environmental change, understanding climate-driven shifts, and improving our ability to forecast harmful algal bloom events.
Beyond the science, the event created a welcoming space for conversation and exchange, bringing together researchers and science enthusiasts with a shared interest in marine ecosystems.
SRAP sincerely thanks Dr Penelope Ajani for sharing her expertise, her work and her passion! The event was a great reminder that science can be both technically rigorous and visually compelling, and that even the smallest organisms can have the greatest impact on our oceans and communities.
Ana Rubio, Marcos Roca, Paula LLul, Oscar Perez, Manel, Emilia Saez, Luis Salvador, Penelope Ajani, Alec, Eva Fernández, Alex, Isabel Nuñez.