Five <a href="//commons.wikimedia.org/wiki/Category:Ginglymostoma_cirratum" title="Category:Ginglymostoma cirratum">Ginglymostoma cirratum</a> (nurse shark) specimens in a large aquarium in Rotterdam zoo (Diergaarde Blijdorp).  
<p>I took this photo on 2019-05-17.</p>
<a href="//commons.wikimedia.org/wiki/User:B_jonas" title="User:B jonas">B jonas</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>