 mud along the river's bottom. They don't know why the dolphins have been stranding themselves, and so far they've only managed to get 10 of them into deeper, safer water. Well, he was known for starring in TV shows like Roseanne and Fernwood Tonight. Actor and comedian Martin Mull has died. His family says it happened after a valiant fight against a long illness. Martin Mull was 80 years old. I'm Jane Fergus. This is Fox News.