Tuna is said to be bad for cats, but it also has toxins that affect humans, too. If eaten in large quantities, you could contract mercury poisoning or worse. But why subject yourself to that when you wouldn't even feed tuna to your kittens? Because it tastes good? Well, you can get that same great taste without any fish! Watch this recipe to learn how to make a tuna salad, full of vegetables and the secret ingredient— hijiki— a delicious fresh-from-the-sea flavor sold in dried black strips.