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Platypuses spend much of their time diving for food and swimming underwater to hunt for tiny crustaceans, insect larvae and annelid worms. They have sensitive ears, so having ear slits which are closed off by folds means that their ears remain protected from water entering. For the same reason, platypuses close their eyes underwater. They do not need to see or hear whilst underwater, as they find their food using the sensitive electroreceptors in their bill.

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9y ago

The platypus spends much of its time in the water, diving and hunting for food. It is able to close both its ears and nostrils so that water does not enter these passages, while it also closes its eyes for protection. Platypuses do not need to be able to see, hear or smell in order to hunt, as they have special electroreceptors in their bills, with which they detect their prey.

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Q: Why does a platypus have ear slits?
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