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These invertebrates encompass an incredibly diverse group of creatures. Characteristic of their hard exoskeleton, some mollusks with distinct shell coverings like snails, clams, oysters, and scallops are apparent. Still, others are not, as they lack a visible shell like the octopus, squid, and sea slug. Although mollusks make up 23% of all marine organisms, many of them have adapted to living in freshwater and on land. Found in nearly every body of water on earth, both fresh and salt, mollusks range in size from the world’s smallest snail in Borneo to the giant squid found in the deepest parts of the ocean. </p><p class="tag-element" style=""> No matter where you go, saltwater or fresh, you will be diving with mollusks in one form or another. Some of the more popular mollusk dives include the colorful giant clams of Australia, the nudibranch capital of the world in the Philippines, and the giant Pacific octopus in the Pacific Northwest. Diving with mollusks is always a fun encounter. Click the map below to explore all the different places on earth where you can dive with mollusks. </p></div><div class="col desktop-col-start-5 desktop-col-end-13 mobile-col-start-1 mobile-col-end-13" style=""> <div class="tag-element cardshelf"><div class="card-shelf-wrapper"><div class="cardshelf-inner"><a class="cardshelf-item" href="/en/mydiveguide/marine-life-detail/molluscs/octopus"><div class="base-content"><div class="card-shelf-image"><img src="https://cdn.divessi.com/cached/Wildlife_Octopus_Alamy-Reinhard-Dirscherl.jpg/400.jpg" alt="" loading="lazy" /><div class="image-copyright">© Alamy/Reinhard Dirscherl</div></div><h3>Octopus</h3></div><div class="overlay-content"><p>Go diving with octopuses and you’ll encounter firsthand how interesting and incredible these animals really are.</p></div><div class="cardshelf-more">Learn more <i class="las la-angle-right"></i></div><div class="cardshelf-item-background"></div></a><a class="cardshelf-item" href="/en/mydiveguide/marine-life-detail/molluscs/squid"><div class="base-content"><div class="card-shelf-image"><img src="https://cdn.divessi.com/cached/Wildlife_Squid_Shutterstock_DiveIvanov.jpg/400.jpg" alt="" loading="lazy" /><div class="image-copyright">© Shutterstock_DiveIvanov</div></div><h3>Squid</h3></div><div class="overlay-content"><p>Squid are intelligent animals that thrive in every ocean worldwide, including the freezing polar regions.</p></div><div class="cardshelf-more">Learn more <i class="las la-angle-right"></i></div><div class="cardshelf-item-background"></div></a><a class="cardshelf-item" href="/en/mydiveguide/marine-life-detail/molluscs/cuttlefish"><div class="base-content"><div class="card-shelf-image"><img src="https://cdn.divessi.com/cached/Wildlife_Cuttlefish_SSI-Peter-Schinck.jpg/400.jpg" alt="" loading="lazy" /><div class="image-copyright">© SSI-Peter-Schinck</div></div><h3>Cuttlefish</h3></div><div class="overlay-content"><p>There are approximately 100 species of cuttlefish that range in size from 2.5 to 90 cm ( 1 to 35 inches).</p></div><div class="cardshelf-more">Learn more <i class="las la-angle-right"></i></div><div class="cardshelf-item-background"></div></a><a class="cardshelf-item" href="/en/mydiveguide/marine-life-detail/molluscs/nudibranch"><div class="base-content"><div class="card-shelf-image"><img src="https://cdn.divessi.com/cached/Wildlife_Nudy01_SSI-Peter-Schinck.jpg/400.jpg" alt="" loading="lazy" /><div class="image-copyright">© SSI-Peter-Schinck</div></div><h3>Nudibranch</h3></div><div class="overlay-content"><p>Nudibranchs inhabit ocean waters throughout the world, from the Southern Ocean to the Arctic and everywhere in between.</p></div><div class="cardshelf-more">Learn more <i class="las la-angle-right"></i></div><div class="cardshelf-item-background"></div></a></div></div></div></div></div></section></article></main> <footer> <nav> <section class="promo-links"> <a 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