def Find_IPV6_In_Text(text):
    """Find and return all IPv6 addresses in the given string.

    :param text: string to search.
    :type text: str

    :return: IPv6 addresses found in string.
    :rtype: list of str
    """

    ipv6 = []
    for word in text.split():
        if (word.count(':') >= 2) and (word.count('/') == 1):
            ipv6.append(word)
    return ipv6