Hepatic Vein Sphincters in Elasmobranchs and Their Significance in Controlling hepatic Blood flow^* Available to Purchase

Giant barrel sponges (GSBs) remain robust to rising seawater temperatures and have rapidly populated reefs stripped of coral cover by climate change. GBSs may be poised to become the dominant habitat-forming organisms in tropical reef ecosystems of the future. In this Review, Joseph Pawlik provides an integrative and critical assessment of research on giant barrel sponges.

Learn about the grants that we launched in 2023 to support junior faculty from two of our awardees: Erin Leonard, Early-Career Researcher (ECR) Visiting Fellowship recipient, and Pauline Fleischmann, Research Partnership Kickstart Travel Grant recipient. The next deadline to apply is 28 November 2025.

Farmed salmon can experience high levels of CO2 and now Marco Vindas and colleagues report that fish which have experienced this form of stress show signs of fishy depression. They hope that understanding this could help farmers improve the fish's quality of life.

Doug Altshuler and Ken Welch tell us about the extraordinary lives of hummingbirds, from their ability to hover during flight to their use of nectar as a primary food source.