you get the ice shark's attention by shooting around them or getting close to the and they will follow you and then you lead them to the dark hole.
There is no Mechanical Island. However, Astro Knights Island is replete with robot plants and animals, while Steamworks island has actual plant monsters as well as mechanical devices. Game Show Island is populated by robots. (see the related questions)
There are no plants to click on. You click on the lower shelf in the castle library (McM) and click the "planets" when you arrive at them. On the Jungle Planet, the elevator plants work automatically when you jump onto them.
gases doesnt enter the planet
The miconia plant
Plant Island:20 seconds,Cold Island:10 minutes
stomata
through the leaves and the roots
roots
That way it can get the things it needs
After you defeat the ice plant you go to the fire plant or jungle plant. But if you were already there you can go to the asteroid belt where there is a castle shaped like an asteroid.
Leaves
water