Toxic marine life refers to organisms in the ocean that produce harmful substances, which can be dangerous to humans and other animals. Examples include certain species of jellyfish, pufferfish, and cone snails, which have venom that can cause severe reactions or even death. These toxins can be used for defense against predators or to capture prey. Some toxic marine organisms can accumulate harmful substances from their environment, such as algae that produce toxins leading to red tides. Consuming contaminated seafood can pose health risks, making it essential to monitor and manage these toxic species to protect both marine ecosystems and human health.