The Roundhouse Aquarium Teaching Center is a community aquarium and marine education facility situated at the end of the Manhattan Beach Pier in Manhattan Beach, California, dedicated to promoting appreciation and understanding of the ocean environment through immersive exhibits and hands-on learning. The aquarium is home to more than 100 marine animals representing over 75 species native to the Santa Monica Bay and Southern California waters, including moon jellies, leopard sharks, moray eels, sheephead, octopuses, lobsters, and tiger tail seahorses. Interactive exhibits include a wrap-around touch tank where visitors can handle sea stars, sea cucumbers, sea urchins, and sea snails, alongside tide pool recreations and freshwater displays. Education programs are standards-aligned and designed for school groups and public visitors alike, making the Roundhouse Aquarium a beloved and accessible introduction to the marine ecosystems of the Southern California coast.