Just a couple of tidbits about Mirromy in water.

-They aren't fast swimmers, instead they use cunning, hunting parties, and their own tongue to hunt for small prey.
-They do make nets when working in groups, made of thin woven seaweed.
-Legs are typically tucked under tail when swimming, on image they are posted on outside so positions can be seen.

Mirromy and art ©   iggi