Sort:  

I'm just throwing something nutty out, but wouldn't it be neat if it actually housed a water to air kind of filtration system so they could stay under water longer? I mean, why not, right? Air breathing fish exist. :P

I'm sure militaries have spent a lot of time and money trying to make gill-breathing work for people.

Coin Marketplace

STEEM 0.20
TRX 0.26
JST 0.039
BTC 100693.54
ETH 3647.21
USDT 1.00
SBD 3.13