![]() ![]() ![]() Our guests today are Dita O’Boyle from the Rookery Bay National Estuarine Research Reserve and Halle Berger, a 2021 Sea Grant Knauss Marine Policy Fellow. Sometimes smaller fish also use the urchins for safe shelter from predators while moving throughout the reef. Now crabs are not the only marine creatures to benefit from the urchins' sharp spines. The crab is built with two back legs that are especially adapted to grab anything from debris, corals, and even sponges. In return for it’s protection, the sea urchin is able to find food more quickly and effectively when traveling with the crab. This crab can carry fire urchins on their backs and when confronted with a predator, the crabs have been known to wield the spiny urchins, like a weapon. ![]() The crab in this episode is most likely a carrier crab, or it is also known as the “urchin crab”. The urchin relies on the crab, just as the crab relies on the urchin.īefore we begin our chat, let’s set the stage for the deep dive. The two invertebrates featured have a large amount of diversity in the two groups with over 6,000 different species of crabs and 950 species of sea urchins. Shellington explains to Captain Barnacles that the crab and urchin are symbiotic, meaning that they have a mutually beneficial relationship, and need each other for food and protection. A snail tells them that a green-blue crab and an orange sea urchin are arguing loudly and keeping all the sea creatures up. This podcast is hosted by NOAA’s Office of Education and the Coastal Ecosystem Learning Centers network. For today's podcast, we are talking about the Crab and the Urchin Octonauts episode. It's bedtime for the Octonauts until a knocking sound wakes up Kwazii and Captain Barnacles. HOST: Our monthly podcast brings together experts from inside and outside of NOAA to help you - and the children you care about - learn more about the real-life versions of the Octonauts sea creatures and the ocean they call home. MUSIC: Explore! Rescue! Protect! Octonauts! Their mission: to explore the world’s ocean, rescue the creatures who live there, and protect their habitats. HOST: You’re listening to "NOAA & the Octonauts" - an episode-by-episode discussion of the children’s TV show The Octonauts, which features a crew of quirky and courageous undersea adventurers. MUSIC: Octonauts, to your stations! Barnacles! Kwazii! Peso! ![]()
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