Ecco the dolphin!

ecco.sh

#!/bin/bash

if [ -z "$1" ]
then
  message="eeee eeee!"
else
  message="$1"
fi
  

echo "                                   __"
echo "                               _.-~  ) \"$message\""
echo "                    _..--~~~~,'   ,-/     _"
echo "                 .-'. . . .'   ,-','    ,' )"
echo "               ,'. . . _   ,--~,-'__..-'  ,'"
echo "             ,'. . .  (@)' ---~~~~      ,'"
echo "            /. . . . '~~             ,-'"
echo "           /. . . . .             ,-'"
echo "          ; . . . .  - .        ,'"
echo "         : . . . .       _     /"
echo "        . . . . .          \`-.:"
echo "       . . . ./  - .          )"
echo "      .  . . |  _____..---.._/ ____"
echo "~---~~~~----~~~~             ~~"