Dear marmamers, On behalf of my co-authors, I'm excited to share our new review paper published in *npj Biodiversity *"Marine mammals as indicators of Anthropocene Ocean Health" The article is fully open access and can be found here: https://rdcu.be/dTxqs Abstract: The current state of marine mammal populations reflects increasing anthropogenic impacts on the global Ocean. Adopting a holistic approach towards marine mammal health, incorporating healthy individuals and healthy populations, these taxa present indicators of the health of the overall Ocean system. Their present deterioration at the animal, population and ecosystem level has implications for human health and the global system. In the Anthropocene, multiple planetary boundaries have already been exceeded and quiet tipping points in the Ocean may present further uncertainties. Long and short-term monitoring of marine mammal health in the holistic sense is urgently required to assist in evaluating and reversing impact on Ocean Health and aid in climate change mitigation. If you have any questions, please don't hesitate to email me. Kind regards, Stephanie Plön BioConsult SH Husum, Germany The current state of marine mammal populations reflects increasing anthropogenic impacts on theglobal Ocean. Adopting a holistic approach towards marine mammal health, incorporating healthyindividuals and healthy populations, these taxa present indicators of the health of the overall Oceansystem. Their present deterioration at the animal, population and ecosystem level has implications forhuman health and the global system. In the Anthropocene, multiple planetary boundaries have alreadybeen exceeded, and quiet tipping points in the Ocean may present further uncertainties. Long andshort-term monitoring of marine mammal health in the holistic sense is urgently required to assist inevaluating and reversing the impact on Ocean Health and aid in climate change mitigation. The current state of marine mammal populations reflects increasing anthropogenic impacts on theglobal Ocean. Adopting a holistic approach towards marine mammal health, incorporating healthyindividuals and healthy populations, these taxa present indicators of the health of the overall Oceansystem. Their present deterioration at the animal, population and ecosystem level has implications forhuman health and the global system. In the Anthropocene, multiple planetary boundaries have alreadybeen exceeded, and quiet tipping points in the Ocean may present further uncertainties. Long andshort-term monitoring of marine mammal health in the holistic sense is urgently required to assist inevaluating and reversing the impact on Ocean Health and aid in climate change mitigation.The current state of marine mammal populations re flects increasing anthropogenic impacts on theglobal Ocean. Adopting a holistic approach towards marine mammal health, incorporating healthyindividuals and healthy populations, these taxa present indicators of the health of the overall Oceansystem. Their present deterioration at the animal, population and ecosystem level has implications forhuman health and the global system. In the Anthropocene, multiple planetary boundaries have alreadybeen exceeded, and quiet tipping points in the Ocean may present further uncertainties. Long andshort-term monitoring of marine mammal health in the holistic sense is urgently required to assist inevaluating and reversing the impact on Ocean Health and aid in climate change mitigation.