I found the Squid interesting because of the more complex internal organs and the features inside are more distinct than the Tapeworm and Earthworm. Squids are useful in their environment because they feed many marine mammals such as a whale. Without Squid, many animals that rely on them would lose a big source of food and nutrients and they would begin to die as a result.
Nice picture. In the squid you start seeing a greater organization of systems and variation in organs. Evolutionary advances appear as you move through the phyla of animals.
ReplyDeleteis this squid male of female? how can we identify it?
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