Northern pike are moving through salt water to invade freshwater habitats in Southcentral Alaska, according to a new study. It’s the first known documentation that northern pike are traveling through estuaries, where fresh water from rivers mixes with the ocean, to colonize new territory in North America.

Engineers have found a way to eliminate the fluid flow “dead zones” that plague the types of electrodes used for battery-based seawater desalination. The new technique uses a physics-based tapered flow channel design within electrodes that moves fluids quickly and efficiently, potentially requiring less energy than reverse osmosis techniques currently require.

Methane from the destroyed Nord Stream pipelines spread over a large part of the southern Baltic Sea and remained for several months. This is according to a new study by researchers from the University of Gothenburg and the Voice of the Ocean research foundation.

Small-scale fisheries play a significant but overlooked role in global fisheries production and are key to addressing hunger and malnutrition while supporting livelihoods around the world, according to research featured in Nature. Published by an international team of scientists, the study is the first to rigorously quantify how marine and inland small-scale fisheries contribute to aquatic harvests and nutritional and socioeconomic security on a global scale.

new Tel Aviv University study has uncovered alarming findings about the spread of microplastic particles in the marine food web. In recent years, numerous studies have examined the dangers of marine animals and more specifically, filter-feeding organisms, ingesting non-degradable microplastic particles. In the current study, the research team sought to understand how the biological filtration by filter-feeding organisms effect the microplastics in their environment. 

New research from the University of Chicago revealed that the nervous system circuitry that controls arm movement in octopuses is segmented, giving these extraordinary creatures precise control across all eight arms and hundreds of suckers to explore their environment, grasp objects, and capture prey.

Urban infrastructure, such as stormwater management ponds (SWMPs), have the potential to be rehabilitated and provide critical freshwater habitat in urbanized watersheds if designed adequately. We tracked different native fish species using passive integrated transponder technology to assess the level of connectivity between a rehabilitated SWMP and a river. We found a high degree of connectivity between the two habitats, even during challenging environmental conditions such as high water temperatures and abundant submerged vegetation.