Green crabs (Carcinus maenas) are a relatively small species of crab that live in intertidal zones and shallow coastal waters (Figure 1). They are native to the Atlantic coast of Europe and North Africa...
If you have never seen a muskellunge (Esox masquinongy), they are magnificent, large, and powerful apex predators in the waterbodies they reside (Figure 1). Georgian Bay in Lake Huron supports a self-sustaining native muskellunge...
In many rivers throughout the world, dams have greatly altered the aquatic ecosystem. These structures block migratory routes for anadromous species that live in saltwater and migrate into freshwater to spawn, preventing them from...
Northeast of Italy’s stiletto heel, in the Southern Adriatic Sea, the continental shelf drops off into a submarine feature known as Bari Canyon (Figure 1). This undersea canyon is similar to one you might...
The round goby (Figure 1) is a relatively small fish species endemic to the Caspian and Black Seas. They have invaded North America and Western Europe, packing a nasty punch to native species. These...
How’d you like to spend Christmas on Christmas Island? To many of us during this time of year in the northern hemisphere, with our cold toes and grey skies, a warm tropical vacation is...
Oyster reefs are dense colonies made up of thousands of individual oysters attached to hard substrate (Figure 1). Because of their complex structures, oyster reefs provide important habitat for a variety of fish and...
Thousands of reservoirs have been constructed across the United States and Canada for water storage, flood control, generation of electricity, and recreation. Reservoirs are dammed rivers that have features (temperature, current, and habitat) that...
Artificial reefs are intentionally placed man-made structures that are constructed to provide habitat for fish and invertebrates. They are made of dense, durable materials such as scuttled ships and barges, decommissioned military vehicles, rubble...
Fisheries and habitat scientists often focus on how vegetation and physical structures can create or enhance habitat for fish. But a recent article turned the tables by evaluating how salmon carcasses provide nutrients that...
