You would need a very good breath hold to find one of these fish....
From Nat Geo....
QuoteThe blob sculpin’s name may not be flattering but it does capture a bit of the animal’s essence. The 2-foot-long (60-centimeter-long) fish is rather reclusive and not often seen, but blob sculpins have been known to dote on their young. Scientists have observed males guarding rocky seafloor nesting sites, filled with hundreds of pale pink eggs, in mile-deep waters off the California coast.