borosilicate glass done worked over a torch, Expect some wonkiness.
 
sea turtle is approx. 6.25" tall
great white shark is approx. 6.25" tall
lobster is approx. 6.75" tall
two fish is approx. 6.5" tall
octopus is approx. 6.25" tall
spotted shark is approx. 6.25" tall