Whale Shark and Eco Snorkeling Tours. From April - July join us onboard the Magellan for a full day of snorkelling over coral reefs and swimming with the Majestic Whale shark, the King of the Sea. In season we may even be lucky enough to see Manta Rays, Humpback Whales, Turtles and rays and much more. From August we offer a Whale shark / Humpback Whale Eco Tour. Again a full day packed with adventure as we explore the Ningaloo Reef and if conditions are safe to do so we'll even get into the water to swim with Humpback Whales.