Basking traps are used to catch basking turtles. Rare visitors to the surrounding seas include dolphins, seals and basking sharks. To thrive, painted turtles need fresh waters with soft bottoms, basking sites, and aquatic vegetation. They spend much of their day basking in the sun. Basking sharks are not indiscriminate feeders on zooplankton. By basking in the sun, the lizard absorbs solar heat. Killer whales have been observed feeding on basking sharks off California and New Zealand. Purported plesiosaur carcasses have been shown to be partially decomposed corpses of basking sharks instead. Tigers&colon; Which can be spotted ambling or basking under the sun. Other notable megafauna include the basking sharks. In general, feeding larvae tend to have lower body temperatures than basking larvae. It leaves the water only for basking on riverbanks. This is in contrast to the passive feeding basking shark, which does not pump water. Their body temperatures are largely controlled by basking and evaporative cooling. The teeth of plankton-feeders such as the basking shark are small and non-functional.