"Finding Dory" was released earlier this month and crossed the $300 million mark after a record 12 days. Millions of people have fallen in love with this forgetful fish. But please, don't find Dory!

According to The Nature Conservancy, Dory is a royal blue tang fish. She and her family live in coastal waters, coral reefs and rocky or grassy areas. She eats algae, using her sharp teeth to tear it from rocks and coral. Her diet prevents overgrowth of algae; without her, the algae would suffocate the coral. She goes by many other names, including blue barber and blue tang surgeonfish. These nicknames refer to the extremely sharp spines on her tail; these spines usually lay flat against her body unless she feels threatened.

Royal blue tangs are not capable of being bred in captivity. That means all of the blue tangs you see in stores are taken from the ocean. Flinders University associate professor Karen Burke da Silva predicts that over 300,000 blue tangs will be sent to stores this year. On top of that, 25 percent will die upon collection. Burke da Silva is concerned that the blue tangs will be over-collected to the point of local extinction, which puts the reef at risk of algae overgrowth. Even the way blue tangs are collected harms the coral reef: according to the Vancouver Humane Society, fishermen who capture the fish release cyanide into the water to stun them, which is hazardous to the environment.

Also, despite her lovable personality, Dory does not make a good pet according to several experts, including Williamstown Aquarium owner Jack Tanner. With the right care, she can live to be around 15 years old. But she needs special care and attention that is challenging, even for experts. She's prone to illness and requires several daily feeds in order to stay healthy. Her tank must be large, filled with salt water and kept at a regular temperature. In the wrong hands, a blue tang can die in as little as six hours.

Following the release of "Finding Nemo" in May of 2003, clownfish sales spiked, rising as much as 40 percent. Many marine-life experts fear the same reaction with the release of the sequel.

If you love Dory, the best way to show it is to let her just keep swimming, just keep swimming, swimming, swimming...in the ocean where she belongs.