Marine Biology podcasts

The hosts discuss nitrogen fixation in a marine alga and the evidence for a nitrogen-fixing organelle. Related topics include plastic pollution, antimicrobial resistance and the rumen microbiome. The episode links microbial evolution and physiology with marine nutrient cycling.

Hosted by Vincent Racaniello, Michael Schmidt

Nature staff discuss a large survey of insect diversity in the Amazon and unusual orca behavior captured on video involving a sunfish.

Brad Gemmell discusses how changing environmental conditions affect the behaviour and ecology of small marine organisms. Topics include ctenophore predation, diatoms and ocean carbon cycling, and the role of upside-down Cassiopea jellyfish as ecosystem engineers. The conversation connects organismal physiology and movement with broader changes in marine ecosystems.

Hosted by Marty Martin

Sara Pruss discusses archaeocyath sponges, the first multicellular reef builders, and their relationship to diversification during the Cambrian. The episode traces successive reef-building groups through the geological record and asks why reefs repeatedly emerge despite environmental disruption and extinction.

Simen Sætre and Kjetil Østli discuss salmon farming and the environmental and animal-health questions surrounding the industry. Conversation in Norwegian.