Talk:Silky shark

Notes

First cut, stole layout from Oceanic_white_tipped_shark.

Need to verify

• young fed in utero by a placental sac ( not sure what this means ... just assumes silky is same as oceanic? :-) )
• Temperature, I have 2 books one say above 23 , the other say it likes 23 best.

Improvements:

• Better distribution, all I have is worldwide, but not how far north/south.
• Picture, I have one will try to upload at some time.
• More text, more headers!!

Stefan 07:02, 2 Nov 2003 (UTC)

Placental doesn't make sense to me either. I'm fairly certain that only mammals have placenta (and then only the placental mammals, not marsupials or egg layers). From the little I know about shark reproduction, viviparous sharks don't actually have a good way to feed their young. In some species, the young will actually eat each other for nutrition. That some sharks would have an advanced system like a placenta and others wouldn't have anything at all doesn't make sense to me. Athaler 18:21, 17 February 2007 (UTC)

Behavior - Lévy flights

I wanted to leave a note about Lévy flights, but I didn't see a behavior section. Perhaps this should be assembled? ᛭ LokiClock (talk) 08:41, 11 June 2010 (UTC)

And an on-topic note... sharks have eyes. Also, they have numerous other senses. So how could Levi flights be relevant here? This species of shark likes to follow tuna, so even if it is confirmed that it displays this motion, how do you know that its not just following the tuna schools levi flight or brownian motion? In nature, and with the senses the shark has, im sure there will always be a smell or sight or sound or whatever sensory information that will be more interesting for the shark than to follow levi flight or brownian motion, even if it only stays within water that is in the appropriate temperature range for this species. 79.230.51.101 (talk) 00:50, 13 August 2010 (UTC)

Having senses - including vision - does not preclude an animal from using Levy flight as a strategy to find prey. Rlendog (talk) 13:49, 13 August 2010 (UTC)

just a random note, hoping that someone sees this and fixes it. the picture linked in this article showing the tunas is upside down. This is why it looks so strange. I noticed because of the upside down dolphin in the picture, okay dolphins do this, but the apparently random bubbles near the bottom left of the picture that turn into a view of the surface of the water from below if you rotate the picture by 180 degrees prove it. Also, tuna normally do not swim upside down, maybe in the gulf of mexico they now do, but this is a temporary phenomenon due to the oil spill and its increased toxicity because of the dispersants, which are themselves toxic and allow the oil to get into tissues which would normally be safe against oil because they are hydrophilic, like gills. 79.230.55.182 (talk) 00:38, 13 August 2010 (UTC)

Yeah, definitely upside down, the uploader could probably change it.--NYMFan69-86 (talk) 02:48, 7 September 2010 (UTC)

It's been changed.--NYMFan69-86 (talk) 19:44, 7 September 2010 (UTC)