Oceanika

[Echidna]

I wouldn't say it's completely indestructible but I definitely don't hesitate to drag it along the bottom on accident.

Ye, but since it's made of rubber, it won't crack or break unless you fold it in half or something I guess?

I haven't seen the orca shaped one.
I'd love to have any of the colorful kid ones, just as a bigger size.
(and then I'd worry how to incorporate it into a tail )