The first website on this list is Nature Portfolio - a great place for the research community with information about its most significant discoveries. The website's journals publish not only primary research but also reviews, critical comment, news, and analysis. This is the right place for anyone who wants to have advanced knowledge and address some of the greatest challenges that we face as a society today.

Nature Portfolio's journals cater to diverse research topics and publication preferences, starting from the renowned Nature journal established in 1869 to subject-specific subscription journals like Nature Genetics and Nature Physics, and inclusive open-access journals such as Nature Communications and Scientific Reports. The website's Nature Reviews titles present expertly curated, accessible, and consequential review material. With superior graphics and enriched content, the site offers context and clarification regardless of your field of study.

Every month, nine million people visit nature.com to read news, analysis, and commentary. Aside from reading titles and studying, students may also use the website's Careers section to locate a career in biology. Furthermore, through supporting the Nature Awards for Mentoring in Science, the John Maddox Prize for Standing up for Science, and the Nature Research Awards for Inspiring and Innovating Science, the website is devoted to fostering the next generation of scientists.

Website's total visits: 39.9M
(Numbers as of April 2023 from www.similarweb.com)

Being the 3rd most-cited and 6th largest research publisher and open science platform, Frontiers deserved to be called one of the best biology websites for everyone, especially those who need the newest and most accurate biology-related information. Offering articles with high quality, the website's research articles have been viewed more than 1.9 billion times, and its research journals are peer-reviewed by editorial boards of over 202,000 top researchers.

Frontiers was made to make science open, allowing scientists to collaborate better and innovate faster, as well as allowing students to study biology easier, all to deliver the solutions that enable healthy lives on earth. The site believes that by providing free biological information, people will be able to develop more knowledge and accelerate innovation, health, and prosperity for society as a whole.

On frontiersin.org, researchers are placed at the center of everything and are empowered through pioneering technology, artificial intelligence, outstanding service, and rigorous quality standards. The site uses AIRA (Artificial Intelligence Review Assistant) to support the review and quality control of research articles. More importantly, to foster the new generations, the site offers "Frontiers for Young Minds" - a platform where kids engage with leading scientists in reviewing cutting-edge research.

Website's total visits: 18.8M
(Numbers as of April 2023 from www.similarweb.com)

Today, over 30,000 species are on the verge of extinction, and countless more would perish if conservation efforts were not relentless. Knowing that the first step toward conservation is promoting awareness of the magnificent animal species that exist in our world, A-Z Animals was created in 2008 to provide an online encyclopedic reference for all animals. The website aims to educate, amuse, and inform readers with incredible content about animals, weather events, plants, and local news that is relevant to them.

A-Z Animals adheres to the highest standards of rigorous research and accuracy so that all readers may be confident that the information provided here represents the most current understanding of a specific species, from scientific name to nutrition, habitat, and more. The website's vast database makes it a great place for anyone who wants to know more about biology in the animal world. Moreover, it uses reputable sources such as the National Geographic Society and World Wildlife Fund to ensure accuracy and credibility in its biology-related content. Additionally, the website is designed to have engaging content that brings forward the most interesting aspects of the animal kingdom.

In addition, on a-z-animals.com, besides information about all kinds of animals you could think of, readers can also find information about many programs that A-Z-Animals is designing and organizing. From there, you can also support them to protect the biological diversity of our world.

Website's total visits: 16.8M

(Numbers as of April 2023 from www.similarweb.com)

Placed fourth on our list is biomedcentral.com, or BMC - an amazing website that offers a growing collection of 300 peer-reviewed publications that share discoveries from research groups in science, technology, engineering, and medicine. In 1999, BMC made high-quality research open to everyone who needed to access it, and since then has dedicated itself to continuous innovation in research publishing in order to better fulfill the needs of our communities while also guaranteeing the integrity of the research we publish and advocating for the advantages of open research for all.

Leading research journals on the website include selective titles like BMC Biology, BMC Medicine, Genome Biology, Genome Medicine, and BMC Global and Public Health, academic journals like Journal of Hematology & Oncology, Malaria Journal, and Microbiome, and the BMC series, 53 inclusive journals focused on the needs of individual research communities. In addition, BMC collaborates with major institutions and groups to produce journals on their behalf.

In addition, on the site, people who have an interest in biology, especially students can have access to various learning materials through the site's Education section. Moreover, similar to Frontiers, BMC is also an organization dedicated to helping authors everywhere to make more connections with research communities across the world.

Website's total visits: 15.8M
(Numbers as of April 2023 from www.similarweb.com)

If you are interested in biology, National Geographic is for sure one of the most familiar names to you! The organization's long history of daring exploration stretches back to 1888 when 33 notable professors and scientists founded an association committed to the "increase and diffusion of knowledge." Now, its website is one of the most visited biology websites, and of course, is also one of the best places on the internet to learn about biology.

National Geographic pushes the boundaries of knowledge, uncovering new insights about the natural and cultural worlds, and strengthens its connection to them and one another through various ways, one of them being its website where the organization shares the newest information about nature and biology. As a result, nationalgeographic.org reaches and resonates with millions of people worldwide every day.

For more than 130 years, National Geographic maintained committed to its founding objective of pursuing and celebrating discovery, scientific brilliance, education, and great narrative, all while developing with agility and tenacity in a constantly changing world. Moreover, the organization has also been funding many individuals who are dedicated to scientific discovery and understanding our world. If you want to be the next person to continue the organization's mission, check out their website now!

Website's total visits: 4.7M
(Numbers as of April 2023 from www.similarweb.com)

Springer Nature is a leading academic publisher that provides high-quality scientific, medical, and technical content to researchers, professionals, and students worldwide. It is a global publisher with branches in over 50 countries and a vast catalog of publications that includes books, journals, reference works, protocols, and databases. Its website, springernature.com, is a comprehensive platform for accessing this content and other resources related to research and academia.

For over 180 years, Springer Nature has dedicated itself to the academic community, creating value across the publishing process. And its website, springernature.com allows users to browse and search this extensive collection of content easily. The website's interface is user-friendly, with intuitive navigation tools that enable users to filter their searches by subject area, type of publication, author, and keyword. Users can also access multimedia content such as videos, infographics, and podcasts, making springernature.com an engaging and interactive platform for learning.

On springernature.com, users can also see how the organization supports and serves teachers, students, and institutions. Springer Nature works together with educators to deliver high-quality books, information, and resources to students in schools and universities throughout the world. The organization has been bringing new approaches, creating digital resources, and delivering effective teaching practices and pedagogy that motivate students to achieve the best outcome.

Website's total visits: 4.4M
(Numbers as of April 2023 from www.similarweb.com)

The last website on our list is Biology Online - a great website that provides access to information about biology for anyone who is interested, including students, educators, scientists, life science professionals, and others. The site was created in 2001 to educate and raise awareness about biology by providing free access to foundational information in biological sciences. Since then has been one of the most comprehensive databases of biology terms, tutorials, and articles in the world, with over 33 million annual visitors.

The simplicity of biologyonline.com's design and its content delivery have brought critical acclaim. Users can easily find information quickly and effectively. All the site's biology terms and tutorials have been produced by trained biologists who follow editorial guidelines. Furthermore, these were vetted and refined by the community of 285,000 members. In addition, to ensure that the content provided is up-to-date, readable, verified, and useful, an advisory board of scientists and biology educators directs the site's editorial direction. Financial and editorial partners also collaborate to bring the breadth and depth of biology-related content to the site.

Moreover, feedback is appreciated to improve the information presented. Therefore, while using the website, if you have any comments, suggestions, or ideas for partnership, feel free to contact the website at any time! Offering free access to foundational information in biological sciences, with over 75,000 biology terms and tutorials, Biology Online is for sure a valuable resource for anyone interested in learning about biology.

Website's total visits: 989.8K

(Numbers as of April 2023 from www.similarweb.com)