A Fishwatcher’s Guide to Life, the Ocean and Everything Guest: Helen Scales, marine biologist, diver, surfer, broadcaster and author, “Eye of the Shoal: A Fishwatcher’s Guide to Life, the Ocean and Everything” With more than 30,000 species, the world of fish is more beautiful and strange than you can imagine.  Soul of an Octopus Guest: Sy Montgomery, author, “The Soul of an Octopus: A Surprising Exploration into the Wonder of Consciousness” The octopus is a smart, social creature and each has a distinctive personality. In fact, each arm has a "mind" of its own.