# Talk:Shark

Under Physiology > Thermoregulation, change "... and the scalloped hammerhead close its mouth and gills when they dives to depths of around 800 metres, holding its breath till it reach warmer waters again" to "... and the scalloped hammerhead closes its mouth and gills when it dives to depths of around 800 metres, holding its breath until it reaches warmer waters again". Spelling/Grammar corrections. 98.109.56.136 (talk) 15:21, 9 July 2024 (UTC)

Currently, the clade box notes sharks as being equated with selachimorpha. Browsing through the overall listings of shark-related articles, it would be better described as elasmobranchii, minus batoidea. The current clade description excludes about half of all known sharks. Rhialto (talk) 15:16, 26 October 2024 (UTC)

The two classifications in Elasmobranchii use Selachii instead of Selachimorpha, so I think Selachii should be used in the taxobox and the cladogram. But I don't follow your objection. Which sharks are excluded from Selachii/Selachimorpha? Or which articles are showing a different classification, with shark orders excluded from Selachii?  —  Jts1882  | talk  16:56, 26 October 2024 (UTC)
As currently structured, Elasmobranchii splits into Euselachii > Neoselachii > Batoidea and Selachimorpha on one side, and Selachii > Galeomorphii > Carcharhiniformes and Lamniformes on the other. Selachi and its child clades is therefore excluded from the current definition of shark (=Selachimorpha). The Selachi clade includes hammerhead sharks, basking sharks, great white sharks, mako sharks, megamouth sharks, and sand tiger sharks, among others. I suppose it is possible that the clade tree structure itself is faulty. If that is the case, that is a much more complex fix, and well beyond my expertise. Rhialto (talk) 17:59, 26 October 2024 (UTC)

The last paragraph in Physiology > Thermoregulation has horrible grammar, please can someone who has the power fix it.
Thank you. Jellywank (talk) 03:06, 2 February 2025 (UTC)

Try now. cyclopiaspeak! 09:50, 2 February 2025 (UTC)

Selachimorpha and Selachii are synonymous. While the shark page uses Selachimorpha, Galeomorphii and Squalomorphi pages use Selachii. But we should use only one. Which one should we use? I think we should use Selachii. Oh, by the way FotW5 uses Selachii. Jako96 (talk) 11:11, 2 March 2025 (UTC)