All marine angiosperms are submersed, hydrophilous species.
Zhi-Yuan Du, Qing-Feng Wang 2014, 'Correlations of Life Form, Pollination Mode and Sexual System in Aquatic Angiosperms',PLoS ONE10.1371/journal.pone.0115653. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Of these, 17 are hydrophilous species found exclusively or primarily in aquatic environments.
Juliana G. HINTON, Harry A. MEYER, Mitchell M. McFATTER 2007, 'Nearctic freshwater tardigrades: a review', Journal of Limnologyhttp://www.jlimnol.it/index.php/jlimnol/article/view/210. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Dendrophilous (38 species) and hydrophilous (35 species) dominate among them.
Fedun О. М., Davydenko І. V. 2016, 'Ornithological Fauna of the Waste Water Treatment Plants in the Northern Left BankUkraine (Chernihiv and Kyiv Regions): Winter Populations and Ecological Structure',Vestnik Zoologiihttp://www.degruyter.com/view/j/vzoo.2016.50.issue-6/vzoo-2016-0055/vzoo-2016-0055.xml?format=INT. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)