Final answer:
Sharks hunt primarily at night and not at dusk and in the afternoon. They have well-developed senses, including the ability to detect electromagnetic fields and the electric fields of their prey. The lateral line helps them detect movement and vibration in the water.
Step-by-step explanation:
The statement that sharks hunt at dusk and in the afternoon is false. According to the information provided, sharks are known to hunt primarily at night. They have well-developed sense organs, including a keen sense of smell, the ability to detect electromagnetic fields, and electroreceptors called ampullae of Lorenzini that allow them to detect the electric fields produced by their prey. Sharks also have a sensory structure called the lateral line, which helps them detect movement and vibration in the water.