In deep water fishing spots, variety abounds – both in terms of fish and types of fishing. In summer, the deep water can be several degrees colder than the shallow, coastal water. This may attract predatory fish that prefer the cold water. In winter, a similar situation is in play, since the deep water is warmer than the surface water.
The muddy and soft bottoms are often found in inlets, fjords, and brackish areas where outflow from rivers or drainage canals has transported sediment for many years. At the right times of year, these areas offer some fantastic fishing. From late fall till spring, the soft bottoms tend to be where the sea trout, for instance, can easily find food such as bristle worm, goby, and shrimp, since this type of bottom is a good heat insulator during winter.
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.
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.
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.