Formations of rocks, gravel, or sand created by current, wind, and weather form a compressed and lifted seabed, which provides fish with optimal conditions. There is often a huge water flow on these reefs. The depth is often greater on the sides of a reef, which means that the current will often be stronger there. Shoals of smaller fish roam in proximity to reefs in order to hunt, since the small food options are whirled around in the current. In their wake, the sea trout and other predatory fish follow. Reefs are useful spots year round, and they are optimal stops for sea trout when they migrate. Spending more time than usual on such a spot can easily be worth it.
Even though walking around on rocks along the coast may feel annoying, it’s often a good indicator of the presence of optimal bottom conditions for the sea trout and its food options. Everything from pebble to huge chunks of granite provides cover for sand hoppers, shrimp, and small fish. If there are waves, these food options are easily whirled up into the water column. A rocky bottom can be good all year round, but especially so during the cold months with few food options in the deeper water. A rocky bottom at a good depth also attracts other predatory fish such as cod and garfish.
A fishing spot with current and good water flow is always a magnet during the warm months, when spots of this type will be rich in oxygen. Current water contains many food options that ride the current and thus attract the predatory fish. Current water can be good year round and particularly in combination with reefs, points, and banks.
Along with the eelgrass, bladder wrack is the most prevalent aquatic plant along the Danish shores. This seaweed attaches itself to smooth surfaces such as rocks, gravel, and other variations on the bottom. The bladder wrack is a good hiding place for food options and fish. Bottom conditions with bladder wrack are good indicators of fish being nearby.