Algae: https://www.landcareresearch.co.nz/resources/identification/algae

Animals: https://www.landcareresearch.co.nz/resources/identification/animals

Fungi: https://www.landcareresearch.co.nz/resources/identification/fungi

Plants: https://www.landcareresearch.co.nz/resources/identification/plants

Note: I used the algae one to classify some of the algae growing in one of my fish tanks. It was really helpful and there are collection, identification, and interpretation tips. Students will find these indentification guides easy to use and it's a great way to introduce them to dichotomous keys.